Dometic RM 2652 won't cool on A/C
I'm stumped! My Dometic RM 2652 will only work in gas mode. I have replaced the circuit board twice. I replaced the heating element also. I have check for power to the board, both AC and 12V and every...
Forum Discussion
Have you done any Voltage checks for the 120V AC circuit?
Did you use the 'correct' replacement lower control board?
Based on Serial Number -----
AC MODE:
Check that incoming 120V AC voltage is present at terminals J5 and J6 on the circuit board.
Check for 120V AC voltage at the heating element connection terminals J7 and J8 on the circuit board.
If no voltage is present, check the 5 amp AC and 3 amp DC fuses.
FUSES
The 3 amp DC fuse is designed to protect the circuit board from internal shorts. (Horizontal fuse---mid position on board)
The 5 amp AC fuse is designed to protect the integrity of the AC heater circuit from short (Vertical fuse---far left position on board)
Even when elements OHM correctly they can still be faulty.
Unplug element leads from board
Plug them DIRECTLY into the 120V AC Outlet and let it run.
This bypasses ALL controls/safety features BUT will test elements heating ability.
Plug it on in AM and check it in PM...if element works fridge will be cold
Throwing parts at it will work eventually.......testing/measuring is less costly
Did you use the 'correct' replacement lower control board?
Based on Serial Number -----
AC MODE:
Check that incoming 120V AC voltage is present at terminals J5 and J6 on the circuit board.
Check for 120V AC voltage at the heating element connection terminals J7 and J8 on the circuit board.
If no voltage is present, check the 5 amp AC and 3 amp DC fuses.
FUSES
The 3 amp DC fuse is designed to protect the circuit board from internal shorts. (Horizontal fuse---mid position on board)
The 5 amp AC fuse is designed to protect the integrity of the AC heater circuit from short (Vertical fuse---far left position on board)
Even when elements OHM correctly they can still be faulty.
Unplug element leads from board
Plug them DIRECTLY into the 120V AC Outlet and let it run.
This bypasses ALL controls/safety features BUT will test elements heating ability.
Plug it on in AM and check it in PM...if element works fridge will be cold
Throwing parts at it will work eventually.......testing/measuring is less costly
