Dometic Heating & Cooling - Popular Questions, Answers, Tips & Manuals


the other 2 units possibly have heat strips if not turn off the main unit should control furnace switches in power box or on control board

Dometic Heating... | 49 views | 0 helpful votes


make sure fan on auto and unit on heat if ok check heat strip

Dometic Heating... | 69 views | 0 helpful votes


I take help from online websites that have this service like helping in repair some like reliable-store have instant help.. others are a bit slow which I don't prefer... rest is up to u.. U can also get free manuals

Dometic Heating... | 83 views | 0 helpful votes


Need to go up there and give more info. Look for outdoor fan...Is it spinning? Compressor on? Could be dual capacitor as they are 50% of problem lately

Dometic Heating... | 60 views | 1 helpful votes


It sounds like your Dometic unit is not getting power despite the breaker being on. Unless the Dometic unit has an internal fuse to check, I would get out a volt/ohm meter and check to see:
1. Is there power coming out of the breaker that goes to the ac unit?
2. Is there power at the terminals of the ac unit? (You can sometimes remove a ceiling cover to access the contacts on the on off switch.

Lastly is your RV hooked up to full power with two 110 volts on both legs beside the neutral and ground wire? If you are only feeding your RV with a standard 110 volt extension cord and using an adapter, that can mean half the circuits in your RV are energized while the other half 110 volt leg is not. You must energize the second leg by using a full 30 amp or 50 amp dual power cord.

RV's are funny. They require two 110 volt legs with a neutral and a ground. The two 110 volt legs are both of the same phase. There is no 220 volts between the two hot legs as they are in phase. A volt meter between the when hot would read zero volts, while each hot leg to neutral would read 110 volts.

Hope this helps.

Dometic Heating... | 52 views | 0 helpful votes


Direct Replacement? You can go to any hardware store and replace with any thermostat. If you have Air conditioning make sure you get one AC compatible

Dometic Heating... | 50 views | 0 helpful votes


Your system has a dual stage system for better efficiency. That is what the extra wires are. Either get the proper thermostat or decide to operate in single stage mode. High or low - you choose. Marking Wire Color Code Description Marking Wire Color Code Description R Red Power, 24 Vac transformer Rc Red Power from cooling, 24 Vac transformer Rh Red Power from heat, 24 Vac transformer C Black/Blue Common of 24 Vac transformer W White Primary heat cell relay E Brown Emergency heat relay Y Yellow Primary cool call relay Y2 Yellow Secondary cool call relay G Green Fan relay O Orange Change-over relay to cool relay B Blue Change-over relay to heat relay A Heat and cool active to any relay L Emergency heat active lamp X System malfunction lamp P Defrost control lamp

Dometic Heating... | 201 views | 0 helpful votes


Take it back to where you bought and have repaired under warranty.

Dometic Heating... | 51 views | 0 helpful votes


Something has blown. Check fuses, connections, recheck all wiring connections. Don't know why the module and thermostat were changed but there may have been another original problem.

Dometic Heating... | 35 views | 0 helpful votes


It may be major but I have found that most times the condenser fan has broken. It is plastic and shatters easily. You need to remove the cover to check it and connections.

Dometic Heating... | 76 views | 0 helpful votes


on support of Dometic they require the SKU for archived manuals not the model number... Hope that helps.

Dometic Heating... | 83 views | 1 helpful votes


Need to determine if it shuts off on satisfied thermostat, high pressure, low pressure, overload, etc. and inspection of condition and behavior of the system is needed for proper diagnosis. What exactly shuts off, air flow, cooling? does it turn back on and then off, as in short cycling? Make sure there is air flow thru the outdoor coil (radiator) and indoor coil for now. give a visual inspection to those coils making sure they are not obstructed or clogged, impeding air flow thru them and that the fans run. Only then can a technician diagnose the charge and performance of the unit.
One can say it has a bad fan motor, there are at least two in the system, or that there is no air flow thru the radiators, condensor and evaporator, or that supply air flows directly on to the thermostat and thermostat satisfied on temperature, or, or.... who would do the servicing? when was the last maintenance/inspection on the system?

Dometic Heating... | 49 views | 0 helpful votes


See if thermostat is doing it try disconnecting or pull thermostat fuse

Dometic Heating... | 280 views | 0 helpful votes


Probably low on freon. You may need to have a tech come and recharge it. This type of ac generally do not have a charge port.

Dometic Heating... | 46 views | 0 helpful votes

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