What to do if your Dometic thermostat is not working?

To fix this problem the first solution option you have is to do the system reset protocol. If that doesn’t fix the issue, then you have to trace the cable from the thermostat to the rooftop AC. Check both connections to make sure they are tight and once you unplug the cable, you will have to do a system reset.

How does the Dometic single zone thermostat work?

Press the “+” button to toggle between “d1” and “d2”, “d1” for 1 degree F differential and “d2” for 2 degrees F differential. In the Heat Pump mode, the system cycles the compressor On and Off based on the room air temperature and the temperature set point.

Why is my Dometic duo therm not turning on?

Dometic Duo Therm Troubleshooting Unit Not Switching On One of the most common problems that users have reported about getting on the Dometic air conditioner is that it is not switching on. If you are also facing this error then the first thing to check is your connections.

Can you use a Dometic air conditioner on an RV?

One of the best-selling products from Dometic is their air conditioner units. Many companies have these installed on their vehicles by default. Considering this, if you own a motorhome or RV then the AC in your vehicle might be from Dometic as well. Some brands even give you the option to get this installed as an add-on.

What happens if your Dometic thermostat goes down?

Furnace, heat strip, heat pump and fan mode of operation can continue to operate but displays the last temperature set-point. Loss of communication between the CCC 2 thermostat and all system power module boards. System will shut down. Loss of communication between the CCC 2 thermostat and an individual system power module board.

How to troubleshoot a Dometic thermostat error cone?

Dometic 3313192 Thermostat Troubleshooting. Error cone. Solution. E1. Loss of communication between the Single Zone LCD thermostat and the module board. LCD will cycle between E1 and the previous mode setting. System will shut down. E2. Open circuit or out of range Indoor Temperature Sensor.

How to initialize a Dometic LCD thermostat?

How do I initialize a Dometic Thermostat? 1 Ensure your thermostat is Off. 2 Press the“+” button and, while holding it, also press and hold the On/Off Mode button for three seconds. 3 LCD will show ― ―. 4 Press the On/Off Mode button again to turn the system off. 5 This completes the initialization. More

Why is my thermostat not responding to my commands?

The thermostat does not respond to your commands – you push the buttons and nothing happens. It has no power – Wires could come loose, a fuse breaks or it may be disconnected.

What to do if your wireless thermostat is not working?

Here are the fault-resolving strategies that may well get your thermostat back up and running: 1. Check the batteries in the thermostat It sounds so obvious but this is a really common thing. Being wireless, the sole power source for the thermostat is its batteries and they don’t last forever.

How to know if your RV thermostat is bad?

If you do not have a manual for this comfort control system, just click here to get a downloadable copy. or go to the nearest Dometic dealer to see where you can get a hard copy. How do You Know if Your RV Thermostat is Bad? The average life of an RV thermostat is roughly 10 to 15 years.

What does it mean when your RV thermostat is not working?

This like an incorrect temperature reading, blank display, and non-responsive air condition are sure-fire signs that your thermostat has bit the dust. The first sign that you might notice is that your thermostat setting isn’t matching up with the temperature of the motorhome.

The thermostat does not respond to your commands – you push the buttons and nothing happens. It has no power – Wires could come loose, a fuse breaks or it may be disconnected.

Can a motorhome have an integrated thermostat?

Although expensive motorhomes and trailers may have an integrated control system, more basic models such as ours do not. This is the basic, analog-only thermostat that our RV came with. Definitely in need of upgrading!

What does the error code E1 mean on the Dometic thermostat?

Error Code: E1 Results from a loss of communication between the Single Zone LCD thermostat and its module board. LCD will cycle between E1 and the previous mode setting. The system eventually shuts down. E2 Open circuit or out of range Indoor Temperature Sensor.

Why is my CCC 2 thermostat not working?

Loss of communication between the CCC 2 thermostat and an individual system power module board. The LED will display error code El and the zone number that lost communication. Any additional zones that loose communication will blink in addition to the current zone. Open circuit or out-of-range indoor temperature sensor.

What happens if you lose communication with the Dometic thermostat?

Loss of communication between the Single Zone LCD thermostat and the module board. LCD will cycle between E1 and the previous mode setting. System will shut down. Open circuit or out of range Indoor Temperature Sensor. Heating and cooling operation will be locked out.

What to do if your Dometic heater is not working?

1. Clearing communications issues: your unit can get into a situation where the thermostat is not communicating with one or both upper boards. Turn the thermostat off, and turn power to the AC units off and on. Then turn the thermostat on and see if it works better. 2. Reset the thermostat to factory specs.

How to reset Dometic duo thermostat Comfort Control?

Duo-Therm Comfort Control Reset 1 Turn the device on and the light and annunciator data are there. If they are, move on to step 2 and if they aren’t, consult your manual section 5.1. 2 Press the mode button to activate the annunciator light. 3 Then, at the same time, press the up and down buttons and hold.

What to do if your furnace won’t turn on?

Thermostat – If your thermostat isn’t properly functioning, your furnace won’t respond in the correct manner. First and foremost, check to be sure it is set to “heat”. This simple step is often overlooked. Make sure it is securely attached to the wall and no wires appear loose or frayed.

Why does my thermostat not reset to factory settings?

The reset system won’t work if you have a blown fuse, burned wiring, loose wiring, and other mechanical failures that impede the thermostat’s operation. When you are going to do this action, remember that all previous program memory will be erased and the control will reset to factory settings of 72 degrees F for cool and 68 degrees F for heat.

What should I do if my thermostat is not sending a signal?

The thermostat should emit a clicking sound and the furnace should also make a sound. If the furnace does not make a sound, the thermostat is not sending a signal and needs to be replaced. Turn off the breaker to your furnace. Remove the cover from the thermostat to expose the wiring.

How do you troubleshoot a thermostat?

How to troubleshoot a bad thermostat Step #1: Make sure thermostat is on the right setting Step #2: Turn the thermostat up or down 5 degrees Step #3: Replace the batteries (for electronic thermostats) Step #4: Clean the thermostat (for mechanical thermostats) Step #5: Check and test wires and wire connections

Why is my home thermostat not working?

There could be other reasons for a thermostat not working properly. For example, it may have been placed in the wrong spot on your home, such as near a draft or a window. It should never be located anywhere that cools or heats faster than the remainder of your house.

How do furnace thermostats work?

The thermostat sends a low-voltage electrical signal to a relay in the furnace, which signals a valve to open and deliver natural gas to the burners and for the blower to turn on. The furnace’s pilot light or electronic ignition lights the burner inside the combustion chamber.

What to do if your thermostat is not working?

If that doesn’t fix the issue, then you have to trace the cable from the thermostat to the rooftop AC. Check both connections to make sure they are tight and once you unplug the cable, you will have to do a system reset. Or a component in the system failed somewhere and it may be the best thing to replace the thermostat.

Can you put a new thermostat on an old Dometic unit?

You can’t go to the new thermostat unit with a ducted unit without changing all air conditioners and heat pumps, since they are incompatible. If you have an old 4 or 5 button thermostat, you can’t just put in a new Dometic unit.

How to install a Dometic szlcd control box?

Place cover on the thermostat and push until an audible click is heard. h. At the 14 1/4″ x 14 Y4′ opening, connect the following: • Plug the supplied four conductor wire harness that is red/white, orange, black, and red into the SZLCD control relay box. • Connect the +12VDC red supply wire to the red wire from the SZLCD control relay box.

How does the Dometic a / C cycle work in the winter?

It will reverse the freon and blow warm air in the summer and cold air in the winter to melt the ice on the coils. There is a temperature sensor that controls this, This topic is now closed to further replies. Honda generator fail! Poor Honda quality! OMG!

How do you hook up a szlcd thermostat?

• Connect the -12VDC black supply wire to both the black wire from the SZLCD control relay box and the black wire from the SZLCD -12VDC terminal running from the thermostat. • Connect the red/white wire from the SZLCD thermostat +12VDC terminal to the red/white wire from the SZLCD control relay box.

What should I do if my thermostat breaks?

If by chance your thermostat is still under warranty, then you should not touch either the AC or the thermostat. If you do and you break something, the warranty is voided and the repair will be costly. When this code appears, it is best to go to an approved repairman to handle the troubleshooting and diagnosis.

Why does my thermostat not match the temperature?

The AC or heater do not come on – you have been able to set the temperatures for either one but when those temperature levels arrive the appliances do not turn on. The AC or heater won’t turn off – once the temperature setting is reached the appliances continue to work. The setting on the thermostat does not match the temperature in the room.

How do I change the temperature on my Dometic thermostat?

To display the Inside Temperature your thermostat should be in Off Mode. Fan Speed Press the On/Off Mode button until the fan green LED is lit. “Au” (Auto). Press the “+” or “―” button to select the desired fan speed. The temperature set-point is indicated by two digits on the LCD.

Why is my Dometic duo thermostat not working?

But such is not the case and here are some common Duo-Therm thermostat problems and their solutions: 1. The thermostat won’t stay on or turn on – the first place to look will be your on/off switch. If there is a crack in the solder making the connection, then no power will be sent to the switch.

Why does my AC thermostat not turn off?

If you notice that you try to turn off your AC unit, but it keeps running, then you will have to fix it right away to prevent damaging of the machine or decrease in longevity. There are a few reasons as to why your AC unit won’t turn off. First, it could be a busted thermostat, in which case you will have to replace it with a new one.

Can a camper AC shut off on its own?

One can face varrying issues with camper AC’s like “the RV ac shuts off on its own”, or the AC turns ON and OFF repeatedly or sometimes the AC wont blow cold air at all. There can be issues with the thermostat, or the capacitor in the air conditioner. So, how do you identify and repair these issues?

Why does my AC thermostat make a clicking noise?

This noise is caused by a part called a relay, which opens and closes to turn your AC on and off. If your thermostat is secured correctly to the wall this clicking sound shouldn’t be very loud. But if you hear a loud clicking noise and the AC won’t turn on, it could mean the thermostat is malfunctioning. What causes a thermostat to malfunction?

Why does my AC keep clicking on and off?

If you hear one loud click as the AC tries to turn on, there’s a problem with the controls. The culprit could be the capacitor, control board or thermostat. If the clicking happens repeatedly until you manually turn off the AC at the thermostat, the controls might be fine but some other part is refusing to do its job.

Where can I buy a Dometic duo thermostat?

2-Pack of Dometic Duo Therm -Compatible RV AC Replacement Filters – 14″ x 7.5″ – RV Air Conditioner Filter – Made in the USA – Comparable to 3313107.103/3105012.003 – By Mission Automotive . . . . . . Only 12 left in stock – order soon.

What is the wiring diagram for a Dometic B?

Dometic B Manual Online: Air Conditioning Unit, Wiring Diagram. FIG. 22 Threaded Hole In Bottom Mounting Bolt Upper Discharge Duct Discharge Air .The Quick Start Kit can be ins talled on all Duo-Therm roof mounted air conditioners and heat pum ps.

Is there a way to bypass the duo thermostat?

How to Bypass Duo-Therm Thermostat. These will be generic instructions as most thermostats operate the same way and are wired in the same basic manner. The first thing to do is to turn the circuit breaker to the AC off before you do anything. Next, using a flat head screwdriver and pop the cover and the main body of the thermostat off.

Which is the best Dometic thermostat for camping?

Complete temperature control. The Dometic Multi-Zone Comfort Control Center Thermostat can control your Dometic heating and cooling appliances. Weather you are camping in the middle of winter or driving in the hot and humid conditions of the summer, this Dometic Atwood Thermostat is perfect control.

Are there any Dometic air conditioners left in stock?

Only 6 left in stock – order soon. . Only 3 left in stock – order soon. . Only 7 left in stock – order soon. . . . Only 4 left in stock – order soon.

Is the Dometic CT single zone thermostat dangerous?

WARNING This product can expose you to chemicals including arsenic, which is known to the State of California to cause cancer. For more information, go to

What should I do if my Dometic furnace wont light?

However, if I turn it back OFF and wait and then back ON (resets) it will repeat the try to light cycle and often light the second time. John T NOT any fridge expert but this usually works for (the many) fridges I’ve owned. It may have been close to start on its own. Just when you give up on what are doing it may have just ready.

Is the ignitor tip on a Dometic furnace reliable?

Gary, those ignition systems are “fairly” reliable. Its basically a step up HV coil/transformer that receives pulses and the ignitor tip sparking to light the gas. I’ve encountered more ignitor tip failures (cracks, carbon traces, shorts, mis adjustments) or control board failures then the HV ignitor coil/transformer itself.

What should I do if my RV furnace is not working?

In case it is less at 10 V then one of the onboard batteries is likely to be the issue. Without adequate electricity being supplied to the furnace or the thermostat, it might not be able to fire, and the fan may or may not work at all. Consider swapping to a backup battery which can generate in excess of 10 Volts, if feasible.

What would cause a furnace not to light?

A number of reasons can cause the wall furnace to not light, including a damaged thermocouple, a clogged pilot orifice and a disconnected gas supply.

What to do when your furnace does not ignite?

If your furnace is equipped with an electronic igniter, you cannot light the furnace manually. However, you may be able to get the furnace working by turning off the igniter and resetting it. Find the paperwork for your particular furnace to locate the reset button or switch.

Why is my furnace pilot not staying lit?

The most common reason the furnace pilot light won’t stay lit. Bad Thermocouple. A furnace thermocouple is a safety feature that regulates gas flow to your system based on whether the pilot light is on. In simple terms, the thermocouple checks to see if your pilot light flame is lit and turns off the gas flow if it senses that your pilot light is off, so you don’t have gas building up in your home.

Why is my furnace blower not working?

One of the most common problems with furnace fans is a bad blower relay . The first thing to do is check the relay or voltage from the board. If no voltage is recorded, you will have to replace the board or the relay. If there is a battery, check if it is working properly. This is another common reason behind faulty blower fans.

What is the E7 code on a Dometic heat pump?

E7 code on Dometic 2nd AC unit. First checked the circuit breaker. It works, switching AC on and off as it should. E7 code on Dometic 2nd AC unit. First checked the circuit… Thermostat shows error code E7. No-this is for aCCC2 havc Vocational, Technical or Tr… I had AC/Heat Pump #651816C751C0 Installed two years ago.

What is your customer experience with Dometic product?

The algorithm is subject to change in future. What is your customer experience with Dometic? Dometic was first mentioned on PissedConsumer on Jul 15, 2011 and since then this brand received 176 reviews. Dometic ranks 221 of 963 in Equipment category. The overall rating of the company is 1.6 and consumers are mostly dissatisfied.

How to troubleshoot a Dometic thermostat error code?

Dometic 3312026 Thermostat Troubleshooting Error code Solution E1 Loss of communication between the CCC 2 E1 Loss of communication between the CCC 2 E2 Open circuit or out-of-range indoor temp E3 Shorted Indoor Temperature Sensor. All h

What happens if you lose 120 VAC in a Dometic thermostat?

Loss of 120 VAC power to all power module boards on the system. The system will shut down. Invalid zone configuration. The heat pump and heat strip DIP switches are both set to the ON position in one zone. Heat pump, heat strip, air conditioner, and dehumidify operation will be locked out in the affected zone.

Do you need a new Dometic AC unit?

More powerful Dometic AC units mean that you need more power to have them work. Campgrounds do not upgrade as fast as RVs do so you need to consider this possibility before you turn into an attractive campsite for the night. You may need to replace your old Dometic air conditioner with a new one.

Which is the best Dometic RV air conditioner?

Dometic Brisk II Air. 15,000 BTU Rooftop Air Conditioner, Ducted or Non-ducted application. ADB or control kit required. The Brisk II’s smart design and improved materials combine to maximize air flow and performance. It is best-in-class of any standard RV rooftop air conditioner for weight, air flow and capacity.

What causes a Dometic air conditioner to fail?

Although the most common air conditioner malfunctions result from faulty installation and poor service, failures may occur even in case of professional installation and adequate service procedures. The table below is indispensible if your Dometic air conditioner fails.

Why is my Dometic RV not blowing cold air?

When you notice that your Dometic air conditioner is not blowing cold air, check the power panel. Your problem may be as simple as a tripped or blown fuse. This issue does not take a lot of time to fix. To learn more about how to fix your Dometic RV air conditioner, just keep reading our article.