Dometic Single Zone Lcd Thermostat Troubleshooting

Programmable thermostats are sensitive instruments that provide the most incredible comfort while saving energy and time when properly applied. It can be extremely challenging if you hope to cool on a wet day, while this refrigeration machine doesn’t. Thermostatic failures will make you believe that your cooling system is badly incorrect. 

In case you have problems with your programmable thermostat, consider these troubleshooting ideas before you call a technician and try the heating or air conditioning system ASAP. These steps will help you to most if you have your thermostat acting weird. If the system doesn’t work at all or doesn’t seem to work, and you can not even feel cold or wet,  these steps will help you understand what to do next.

Most of the time, the problem may not be anything serious. Restarting your mechanical component is more like a digital superstition. Yet, the restarting process sometimes works just fine. After working for a long time, your thermostat could malfunction, like not working correctly or not taking or following the commands. Try restarting it. That may help.

Let’s not discuss everything in this introduction part, shall we? We have the whole article left to describe. 

Ideas for Troubleshooting

If you are Troubleshooting any programmable technology, it means the tech is not working correctly for a while, and you are very frustrated. Thermostats are that daily life mechanism, without which you may have to suffer a lot. The steps of ideas for troubleshooting will not take much of your time to read through. Following every step, as they are, will show you beneficial results, and you can do them all by yourself. Dometic Single Zone Lcd Thermostat Troubleshooting

Let’s get started;

  • Check for faulty power supply.

Most programmable thermostats work on batteries. Remove the thermostat cover and, if necessary, replace the batteries. Test the circuit board for a tripped breaker. Most thermostats have a fuse inside. Remove the cover to inspect the filet in the fuse. If it’s separated, cut the fuse and take it to the hardware store for a match. 

A wire contact could have been missing. To inspect the wire connections, remove the thermostat from the wall mount. Please use the owner’s manual as a reference. Most suppliers make manuals available on the internet for reading or downloading if you don’t have them.

  • Faulty in Settings of the thermostat

Make sure the thermostat is set to auto, regardless of cooling or heating mode. Test to see if the system works in the opposite way you’re having trouble with. If it does, you’ve isolated the problem to heating or cooling cycles and not the thermostat. If the digital display indicates “hold,” press the “hold” button to engage the program settings. The “hold” setting overrides program settings. 

  • Frozen anticipator

The solution to this problem, we can not call it troubleshooting. If you have a manual heating system, another possible culprit is a frozen anticipator. Locate the arm attached to the circular dial and attempt softly to force it in any direction. If these fixes don’t work, remember the position of the thermostat. You could even need to switch whether you are confined to heat sources, direct sunshine or winds, or built away from the primary residences.

  • Improperly calibrated anticipator

A miscalibrated anticipator would be another scenario. Changing the anticipator lever one move at a time with the word ‘longer’ on the dial will lengthen the loop. It might be time to switch to a programmable thermostat if it does not work.

  • Check for any faulty in Thermostat Mode.

Just make sure you evaluate the mode your thermostat has programmed. Check if the thermostat is in cold mode if you want to cool down your room temperature. Just do the same if you’re going to make your room warm. Most of the time, users don’t even realise that the mode settings are not set. They assume that it will run on its own. 

  • Worn out Thermostat

If you have been using your thermostat for ten years or something, you can expect it to show problematic issues.  Even if your thermostat seems to be working just fine, advances in technology mean you can probably increase your system’s efficiency and lower energy costs by replacing the old one.

We recommend you replace your thermostat. It may save a little money to keep the old one. But you can achieve that minor saving by installing the more efficient unit, which is better?

Some important FAQs about Thermostat Troubleshooting

If you have questions after reading through the article, we will help you out with that. We have arranged some frequently asked questions, not only by current users but also by beginners. 

  • How to reset the Dometic single zone thermostat?Ideas for Troubleshooting

Click on the “+” button and press and hold down the “On/Off” button for 3 seconds while holding it. LCD is going to reveal. To shut the machine off, click the On/Off button again. The initialisation is completed.

  • How to fix the e1 code on my Dometic thermostat?

You should try extracting the thermostat from its holder, disassembling the comm cord, waiting 2 minutes, replug, make sure the CCC2 is off, reset, switch on, and check to see if all the units are accessible.

Symptoms of a Bad or Failing Thermostat?

Temperature gauge reading very high and engine overheating. The first and probably most troubling symptom would be a high red temperature gauge within the first 15 minutes of your cooler engine running.

How to test your thermostat to see if it works?

Remove the thermostat or thermostat cover to reveal the wires with the electricity to the furnace. Remove the wires from the terminals to remove them. Turn together the naked ends of both cables. Turn control back on to the heater.


We always recommend troubleshooting your machine only when you feel that it is not working correctly. Unnecessary troubleshooting may make the situation worse. A thermostat is no different than this. The above-described steps are relatively easy, and you can do it all by yourself. But you must always know when to call in the experts. We have tried to present the steps, following which you may not need to waste money on technicians. Yet, you should take the liberty to consult an expert as you please. 

Leave a Comment