Dometic check light

biggie · 05-23-2012, 09:26 PM

Tonight I went to start the fridge for this weekend and the check light will not turn off. Stays on no matter if on auto our gas. Lit the stove to purge gas lines and same thing. Fuses all checked good. Any suggestions

VinceU · 05-23-2012, 09:43 PM

Quote:

Originally Posted by biggie

Tonight I went to start the fridge for this weekend and the check light will not turn off. Stays on no matter if on auto our gas. Lit the stove to purge gas lines and same thing. Fuses all checked good. Any suggestions

I would first open both AC and DC power supplies with breakers/fuses. Restablish DC power first and and before restart on gas again check if check light is on steady. If it is, may be failure of logic board in back of fridge.

biggie · 05-23-2012, 10:39 PM

Disconnected both ac and dc and retried and check light comes on right away for both again

**Herk7769** · 05-23-2012, 10:43 PM

Here is a pretty good troubleshooting guide.

After opening the AC breaker and pulling the fuse that powers the DC control board and turn OFF the propane.

Check the DC fuse with a multimeter and if good (it should be) plug it back in.

Press the "ON" button and the "AUTO" light should come on.
The Check light should also be "ON".

Select the propane tank you want to feed from and SLOWLY (I do mean REAL slow) open the valve. It should take a good 15 seconds from "crack" to full on.

Light all three range burners on high. Make sure they are blue and tall.
If so,
The check light should have gone out.

If not, turn off the fridge and open the outside panel (careful - it might have a bee hive in it) and examine the burner flue for obstructions or bugs.

Turn it back on and check for gas flow (smell). If no gas flow; it could be the control board or solenoid valve.

Also does it cool on AC? This will have nothing to do with the check light, though; but it will let me know if the control board might be the problem.

biggie · 05-23-2012, 10:49 PM

I will have to try that guide tomorrow. The check light stays on even in auto with shore power

biggie · 05-23-2012, 10:55 PM

Is it normal for check light to be on when hooked to 110 v. and in auto with gas turned off? Will it still cool using 110 V. even though check light is lit?

LadyWindrider · 05-23-2012, 11:23 PM

My understanding is, check light on, failed on propane, if in auto mode, and AC power were removed. If on auto, and have AC power, should never see the check light. If it comes on, and you have propane to everything else, turn fridge off, wait 3 minutes, and the turn on. This will reset everything, and it will try again.

brookside · 05-24-2012, 12:51 AM

On another note I am lows away by how well our dometic works - both on propane and ac... Freezer keeps stuff frozen even while towing on propane. Very impressed.

biggie · 05-24-2012, 05:38 AM

Another thing is the light inside fridge doesn't turn on when you open the door. I am not sure it did before this happened either sop could be bad bulb

**Herk7769** · 05-24-2012, 05:55 AM

Quote:

Originally Posted by biggie

Another thing is the light inside fridge doesn't turn on when you open the door. I am not sure it did before this happened either sop could be bad bulb

This is a BIG clue.
You need 12 volts and a lot of it to run the fridge on Propane.
The interior light is 12 volts.

Do you know how to use a multimeter?

Find out if there is 12 volts available to the board, if so your "eyebrow" control board might be fried.

Replacement Eyebrows

Might be time to also invest in a good surge protector for your power cord.

biggie · 05-24-2012, 10:40 AM

Thanks Herk, I will check for voltage to the board after work tonight. I know I had 12.4 VDC On the battery before I plugged into shore power. Is the eyebrow board on top of fridge?

**Herk7769** · 05-24-2012, 12:25 PM

Yes, the buttons are soldered to it.

biggie · 05-24-2012, 03:18 PM

I have 12vdc going to the control board. Is there a way to check eyebrow board? There is no voltage going to light inside fridge.

biggie · 05-24-2012, 04:31 PM

Now if I shut climate control off the check light shuts off but still think it isn't working. I have 14 vdc to board but only 11.3 on board where the wire goes to the lamp and nothing for voltage at the lamp inside the fridge.

**Herk7769** · 05-25-2012, 08:48 AM

Quote:

Originally Posted by biggie

Now if I shut climate control off the check light shuts off but still think it isn't working. I have 14 vdc to board but only 11.3 on board where the wire goes to the lamp and nothing for voltage at the lamp inside the fridge.

You have reached the limit of my troubleshooting skills.

If no one else has any input, I would:

1) Take it to an authorized Dometic service person (see the web site)

2) Do item replacement and see if it fixes it.
(buy a new eyebrow board and replace yours for example).

#2 could get very expensive if you guess wrong.
#1 is expensive in any case.

youroo · 05-25-2012, 09:16 AM

Quote:

Originally Posted by biggie

Is it normal for check light to be on when hooked to 110 v. and in auto with gas turned off? Will it still cool using 110 V. even though check light is lit?

Herk ask you if it cools on S/P,I dont see a answer yet. Did you leave the S/P on long enough to cool? Should cool on S/P,forget check light,LP,light inside. Youroo!!

biggie · 05-25-2012, 10:45 AM

No it wasn't cooling on either. Used troubleshoot guide herk posted and pointed to board. Went to dealer this morning and picked one up, installed, and no check light. Off to use for first time now, just have to run awhile to make sure it is cooling. Thanks for the help guys!

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