Duo Therm Air Conditioner Troubleshooting

Is your DuoTherm air conditioner on, but it is not working or is the airflow rate is insufficient? For DuoTherm air conditioner troubleshooting, you don’t have to call the repairman. Sometimes it is enough to understand the cause of failure and the way of its removal. The table below could help.

ProblemSolution
If the air conditioner/heat pump doesn’t run (the fan and/or the compressor)If the air conditioner/heat pump doesn’t run (the fan and/or the compressor), check the AC voltage. If the thermostat has no lights showing, it means it is not receiving DC power. The 12-volt DC fuse should be checked. You may also want to look at the breaker at the electrical source. To check your AC voltage when you arrive at your destination, plug in your electrical cord. Inside your vehicle place a voltmeter into a receptacle and start your air conditioner or heat pump. When the compressor starts after a two-minute delay, check your voltage. It must be over 103.5 volts for the air conditioner to operate
When the fan runs and the compressor tries to start but won’t runWhen the fan runs and the compressor tries to start but won’t run, examine the exterior heavy-duty long extension cord, receptacle and plug. If those are in working order, check the AC voltage
If the fan runs, but the compressor cycles on and off and doesn’t cool correctlyIf the fan runs, but the compressor cycles on and off and doesn’t cool correctly, it could be improper or poor air flow, a dirty filter, dirty condenser, short cycling (a duct leak) or the AC voltage may be the problem.
If the compressor doesn’t cycle at allIf the compressor doesn’t cycle at all, a qualified technician should check the filter (which must be clean) and the condenser. It is important to check the condenser to determine if it is blocked. The condenser is visible with the Brisk Air units, but the Penguin air conditioner shroud will need to be removed for inspection. If the condenser is blocked, the debris will need to be removed by a technician
Poor or improper air flowPoor or improper air flow, short cycling, a dirty filter or placing the thermostat on its minimum temperature setting and the fan on low speed in high humidity situations can cause evaporator freeze-up
It’s leaking! What should you do?First, this is something that should be repaired by a certified technician. The technician will take a good look at the mounting bolts, roof gasket and condensation drain holes. It is also good to be sure the technician checks for roof damage

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