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Topic: 99 U270 water heater not working on gas side (Read 639 times) previous topic - next topic

99 U270 water heater not working on gas side

While the electric part of the water heater works fine. the gas side has stopped.  I only have the one switch at the kitchen sink and there is no power to the switch.  I can not find a print for the water heater or wiring.  Does anyone know the print number for a similar coach?  Also, anyone who could tell me where to start to track this down would be appreciated.
Thanks and Happy New Year to all the forum members,
Jerry
Jerry & Nanci
1999 U270 34'WTFI
2011 Malibu
A smart man knows what to say, a wise man knows when to say it.

Re: 99 U270 water heater not working on gas side

Reply #1 –

Are you getting any response from it all?  Is it trying to light?  Assuming your gas in on, 1st thing I would probably check is that you have power to your control board, and the thermal fuse is ok.  Both are located on the water heater itself.  You can test the fuse with a continuity meter, or temporarily bypass it with a jumper wire.

Amazon.com: Atwood 93866 OEM RV Water Heater Thermal Cutoff Kit - Replacement...

Also, make sure that your water heater access door is closed.  Mine has a switch to prevent the water heater exhaust from burning the door while it's open.  An open door or a bad switch can prevent it from running.

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Re: 99 U270 water heater not working on gas side

Reply #2 –
Quote from: bdale –
Are you getting any response from it all?  Is it trying to light?  Assuming your gas in on, 1st thing I would probably check is that you have power to your control board, and the thermal fuse is ok.  Both are located on the water heater itself.  You can test the fuse with a continuity meter, or temporarily bypass it with a jumper wire.

Amazon.com: Atwood 93866 OEM RV Water Heater Thermal Cutoff Kit - Replacement...

Also, make sure that your water heater access door is closed.  Mine has a switch to prevent the water heater exhaust from burning the door while it's open.  An open door or a bad switch can prevent it from running.


He states no power at the switch. This would have to be a fuse to the switch.
As an Amazon Associate Foretravel Owners' Forum earns from qualifying purchases.
1994 U280, Build 4490
Deming, NM.

Re: 99 U270 water heater not working on gas side

Reply #3 –
That is correct there is no power to the switch. 
Jerry & Nanci
1999 U270 34'WTFI
2011 Malibu
A smart man knows what to say, a wise man knows when to say it.

Re: 99 U270 water heater not working on gas side

Reply #4 –
Do you mean there is no 12 volt power to the switch or there is no 120 VAC power to the switch?
The switch in my the kitchen has 12 volt power and turns on the gas, but does not have 120 VAC power.
The 120 VAC switch is at the foot of the bed.
Wyatt
96 U320 40 WTFE, build 4943
84 Toyota Supra towd
2015 Jeep Wrangler towd
Victoria, BC, Canada

Re: 99 U270 water heater not working on gas side

Reply #5 –
Wyatt,
That is correct there is no 12v power to the switch.
Jerry & Nanci
1999 U270 34'WTFI
2011 Malibu
A smart man knows what to say, a wise man knows when to say it.

Re: 99 U270 water heater not working on gas side

Reply #6 –
Quote from: Green99 –
I only have the one switch at the kitchen sink and there is no power to the switch. 
At the foot of the bed is your 12V fuse panel. One of the fuses should be labeled water heater. Check there first.
1994 U280, Build 4490
Deming, NM.

Re: 99 U270 water heater not working on gas side

Reply #7 –
Twig,
Thanks for the response.  The fuse is good.  My issue is that without a print I don't know if it goes from the fuse to the switch or down to the water heater then back to the switch.
Jerry & Nanci
1999 U270 34'WTFI
2011 Malibu
A smart man knows what to say, a wise man knows when to say it.

Re: 99 U270 water heater not working on gas side

Reply #8 –
Quote from: Green99 –
Twig,
Thanks for the response.  The fuse is good.  My issue is that without a print I don't know if it goes from the fuse to the switch or down to the water heater then back to the switch.
Not real familiar with the issue, but if it didn't go to the switch first and it went to the water heater wouldn't the water heater be powered on all the time?
1999 40 ft. U-320 wtfe build 5563 Chuck & Lynda's "Rollin' Inn"  2030 watts solar
prev. mh's 71 GMC 5 yrs. 73 Pace Setter 1 yr. 78 Vogue 5 yrs 81 FTX 40ft all electric 18 yrs. 1996 Monaco Signature 3 yrs.
2014 Grand Cherokee Overland
Dream as if you will live forever. Live as if you will die today.  James Dean

Re: 99 U270 water heater not working on gas side

Reply #9 –
Quote from: Green99 –
Twig,
Thanks for the response.  The fuse is good.  My issue is that without a print I don't know if it goes from the fuse to the switch or down to the water heater then back to the switch.

Common practice would be to go to switch first one would assume.
In restless dreams I walked alone.
Narrow streets of cobblestone.


'93 U225
Build 4337
'14 CRV Toad

Re: 99 U270 water heater not working on gas side

Reply #10 –
Next to the water heater switch should be the water pump switch. Jump the 12V from that switch to the heater switch and see if the heater lights.
1994 U280, Build 4490
Deming, NM.

Re: 99 U270 water heater not working on gas side

Reply #11 –
Twig,
Excellent idea I will try that.
Thanks.
Jerry & Nanci
1999 U270 34'WTFI
2011 Malibu
A smart man knows what to say, a wise man knows when to say it.

Re: 99 U270 water heater not working on gas side

Reply #12 –
PROBLEM SOLVED.  After pulling the fuse the 2nd time and looking at it under a light, the fuse was bad.  Soooooo as Jeff Foxworthy might say:
Here's my sign.  Thanks to all for the help.
Jerry & Nanci
1999 U270 34'WTFI
2011 Malibu
A smart man knows what to say, a wise man knows when to say it.

Re: 99 U270 water heater not working on gas side

Reply #13 –
Yep
Always best to check fuses with a volt/ohm meter rather than a visual.
Especially the smaller amp rated ones.
Justin & Cathy Byrd
1995 U280 "Old Faithful"
36' Build #4673
C8.3 Cummins
Allison MD3060R 6 speed - retarder
Powertech 10KW  4cyl Kubota