Dometic A/C problem

Question

1993 Dometic roof a/c with large analog wall thermostat with switches for fan speeds plus auto. Not a clue model numbers.

What it's doing is when set to cool / auto fan it doesn't run and the Low Power (low voltage) warning light flashes. When set to cool /hi fan it runs fine. There's nothing in the docs about a flashing low power light.

Suggestion? Thanks.

midnightsadie · Answer

see if theres a battery in the thermostat.

dougrainer · Answer

Seems like you have the old Delta Dometic AC unit. There is NO battery in any RV Tstat. They discontinued that system about 1995. Odds are the upper control board is defective and I do not think they have support or parts for that old a unit. If you go on top and remove the top cover, you may still be able to get the Model number. There are 2 places for the model number. On top under the top cover and inside on the metal mount pan but you have to drop the inside plenum to get that model number. Without the model number, nobody can really help you. Does the wall tstat have some led bulbs in it? Doug

Forum Discussion

Dometic A/C problem

About Technical Issues

Related Content

A/C problem

Odd problem with a/c thermostat

A/C problems

Will getting a larger roof A/C solve the problem?

A/C problems Thermostat ?