 |
07-21-2022, 01:18 AM
|
#1
|
|
Junior Member
Brand: Thor Motor Coach
State: Missouri
Posts: 7
THOR #27424
|
Water heat stopped and won't re-light
My water heater was working and then stopped, when I turn on the switchagain, nothing happens. No spark. I manually lit the water heater with a lighter after turning on but it goes off about 5 seconds. So, i am guessing the igniter doesn't work and the probe checking if there is a flame doesn't work. Do I replace the igniter?
Model G6A-8E
__________________
|
|
|
|
07-21-2022, 01:21 AM
|
#2
|
|
Site Team
Brand: Thor Motor Coach
Model: ACE 27.1
State: Florida
Posts: 14,328
THOR #7035
|
Year/Make/Model RV OR water heater model #?
Could be the control board - common OEM failure item for Atwood water heaters.
__________________
Ted & Melinda
2016 ACE 27.1
2016 Chevy Sonic Toad - Selling
2020 Chevy Colorado Z71 Trail Runner Toad
2024 Chevrolet Trax 2RS - Soon 2B TOAD
|
|
|
|
|
07-21-2022, 01:25 AM
|
#3
|
|
Junior Member
Brand: Thor Motor Coach
State: Missouri
Posts: 7
THOR #27424
|
2018 Freedom Elite
__________________
|
|
|
|
|
07-21-2022, 01:29 AM
|
#4
|
|
Senior Member
Brand: Thor Motor Coach
Model: THOR Chateua 35SF
State: Florida
Posts: 5,850
THOR #11130
|
Do they still have thermo-couplers?
__________________
Now an SOB
Traded Thor for Melbourne Prestige 24NP
2018 THOR Chateau 35SF
Two Labs, Bugsie & Blondie
Blondie passed in 2020 at 5 to Leukemia
|
|
|
|
|
07-21-2022, 01:30 AM
|
#5
|
|
Senior Member
Brand: Thor Motor Coach
Model: Chateau 24F
State: Ohio
Posts: 4,163
THOR #16721
|
Have to ask... is your house battery charged and in good condition? The controller needs 12volts to function properly. Same for the ignitor.
No thermocouple... there's no pilot light with electronic ignition.
__________________
Be creative, and have a fun life...
...and don't be an @**hole! -Ken Block
|
|
|
|
|
07-21-2022, 04:25 AM
|
#6
|
|
Junior Member
Brand: Thor Motor Coach
State: Missouri
Posts: 7
THOR #27424
|
My controller says battery fully charged, I have electric connected to motorhome. Makes sense no pilot light. Inside on the controller with the switch to turn on water heater, there us a red light that goes on when "pilot light off" so that wording us probably not correct.
__________________
|
|
|
|
|
07-21-2022, 12:58 PM
|
#7
|
|
Senior Member
Brand: Thor Motor Coach
Model: Chateau 24F
State: Ohio
Posts: 4,163
THOR #16721
|
Quote:
Originally Posted by FrankLucas
My controller says battery fully charged, I have electric connected to motorhome. Makes sense no pilot light. Inside on the controller with the switch to turn on water heater, there us a red light that goes on when "pilot light off" so that wording us probably not correct.
|
Sounds like control board problem. I'd do some research on troubleshooting the water heater/control board and associated circuits before shooting the parts cannon at it. It could be something as simple as a loose wire. OR it could be the board.
__________________
Be creative, and have a fun life...
...and don't be an @**hole! -Ken Block
|
|
|
|
|
07-21-2022, 02:05 PM
|
#8
|
|
Site Team
Brand: Thor Motor Coach
Model: ACE 27.1
State: Florida
Posts: 14,328
THOR #7035
|
Quote:
Originally Posted by FrankLucas
My controller says battery fully charged, I have electric connected to motorhome. Makes sense no pilot light. Inside on the controller with the switch to turn on water heater, there us a red light that goes on when "pilot light off" so that wording us probably not correct.
|
True dat.
It's a holdover from the "pilot light" days. Now it's just an indication of failure to light.
If you need to replace the control board I highly recommend you go with the Dinosaur brand replacement:
https://www.amazon.com/Dinosaur-Elec.../dp/B0130Y8I1K
__________________
Ted & Melinda
2016 ACE 27.1
2016 Chevy Sonic Toad - Selling
2020 Chevy Colorado Z71 Trail Runner Toad
2024 Chevrolet Trax 2RS - Soon 2B TOAD
|
|
|
|
|
07-21-2022, 02:21 PM
|
#9
|
|
Senior Member
Brand: Thor Motor Coach
Model: Chateau 24F
State: Ohio
Posts: 4,163
THOR #16721
|
Here's a great troubleshooting video from Lou at RV Habit...
Even though he calls it a "wooter" heater, don't hold that against him... 
But this video IS very thorough in troubleshooting your problem!
__________________
Be creative, and have a fun life...
...and don't be an @**hole! -Ken Block
|
|
|
|
|
07-21-2022, 03:46 PM
|
#10
|
|
Junior Member
Brand: Thor Motor Coach
State: Missouri
Posts: 7
THOR #27424
|
Quote:
Originally Posted by 16ACE27
|
So I lit the water heater with a lighter, it stays on for a few seconds. How does the controller know it didn't light eventhough it was lit manually?
__________________
|
|
|
|
|
07-21-2022, 03:57 PM
|
#11
|
|
Site Team
Brand: Thor Motor Coach
Model: ACE 27.1
State: Florida
Posts: 14,328
THOR #7035
|
Quote:
Originally Posted by FrankLucas
So I lit the water heater with a lighter, it stays on for a few seconds. How does the controller know it didn't light eventhough it was lit manually?
|
The ignitor (sparky thingy) is also the flame sensor. The heat creates a static voltage that the control board can measure. Same with the furnace.
__________________
Ted & Melinda
2016 ACE 27.1
2016 Chevy Sonic Toad - Selling
2020 Chevy Colorado Z71 Trail Runner Toad
2024 Chevrolet Trax 2RS - Soon 2B TOAD
|
|
|
|
|
07-21-2022, 04:13 PM
|
#12
|
|
Junior Member
Brand: Thor Motor Coach
State: Missouri
Posts: 7
THOR #27424
|
I ordered a controller board and a "sparky thing", I'll try the sparky thing first then the controller board. They arrive in a few days. I bypassed the thermistor, but still didn't light. So it wasn't that. Don't have a meter with me to check continuity. Does anyone know the wires that supplies 12V to the controller?
__________________
|
|
|
|
|
07-21-2022, 05:02 PM
|
#13
|
|
Site Team
Brand: Thor Motor Coach
Model: ACE 27.1
State: Florida
Posts: 14,328
THOR #7035
|
Quote:
Originally Posted by FrankLucas
I ordered a controller board and a "sparky thing", I'll try the sparky thing first then the controller board. They arrive in a few days. I bypassed the thermistor, but still didn't light. So it wasn't that. Don't have a meter with me to check continuity. Does anyone know the wires that supplies 12V to the controller?
|
__________________
Ted & Melinda
2016 ACE 27.1
2016 Chevy Sonic Toad - Selling
2020 Chevy Colorado Z71 Trail Runner Toad
2024 Chevrolet Trax 2RS - Soon 2B TOAD
|
|
|
|
|
07-27-2022, 06:34 PM
|
#14
|
|
Senior Member
Brand: Thor Motor Coach
State: New York
Posts: 119
THOR #21937
|
It's too late now but before ordering an expensive new control board, there is a cheap "heat fuse" located on the unit. If it overheats, a part of the fuse melts and breaks conductivity. That would cause the exact behavior you describe. The fuses come five to a pack for about $3.
__________________
1995 Thor Columbus 325
Full-timer
Digital nomad
|
|
|
|
|
07-28-2022, 02:51 AM
|
#15
|
|
Junior Member
Brand: Thor Motor Coach
State: Missouri
Posts: 7
THOR #27424
|
Is this the one between the brown wire and the water heater? I removed it and connected the wire directly to the water heater. Didn't fix it. A new controller board fixed it.
__________________
|
|
|
|
|
07-28-2022, 03:38 AM
|
#16
|
|
Senior Member
Brand: Thor Motor Coach
Model: Aria 3901
State: Idaho
Posts: 696
THOR #9660
|
Thanks for posting that you got it fixed and how. Many don't.
__________________
Vicki and Mike, Aria 3901- The Wined Up Bus, towing 16 Jeep JKUR. 
|
|
|
|
|
07-28-2022, 03:49 AM
|
#17
|
|
Junior Member
Brand: Thor Motor Coach
State: Missouri
Posts: 7
THOR #27424
|
I first replaced the igniter (sparky thing) since it only cost about $12, when that didn't fix it, replaced controller which fixed it.
__________________
|
|
|
|
|
Posting Rules
|
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
HTML code is Off
|
|
|
|
|
Linear Mode
