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Old 05-31-2016, 05:55 PM   #1
Join Date: Nov 2015
Location: Palmdale
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Atwood Electric/Gas water heater

I have the Atwood GC10A--4E with a dual switch one for Electric and one for LP. There a red light in the middle. I have never seen the light lit. When is this light supposed to come on. The water heater works just fine. I am just curious why I have never seen the light on. Is there a fuse or something blown?

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Old 05-31-2016, 07:13 PM   #2
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On mine the Red light is on only if the LP fails to light

2014 Thor Palazzo 35.1
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2014 THOR PALAZZO 35.1
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Old 05-31-2016, 09:19 PM   #3
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Thank you. well that's a relief.. so we don't want to see it lit
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Old 06-01-2016, 08:29 AM   #4
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Originally Posted by cbelize View Post
Thank you. well that's a relief.. so we don't want to see it lit
Correct, and on a related note, using them both at the same time improves the speed of reheating the water noticeably.
Shell Bleiweiss
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Sedona, AZ
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Old 06-01-2016, 04:00 PM   #5
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The gas ignition fail light may come on momentarily when you first switch on the LP switch. Don't be too quick to shut the switch off. The switch does not directly open the gas valve. The gas valve is opened after the igniter comes on.
Bob & Joan Alexander, 2010 Tiffin Phaeton 36 QSH, 2013 Jeep Wrangler (toad)
Lobo & Juniper (woof, woof)
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Old 06-01-2016, 04:32 PM   #6
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RED light is a FAULT LIGHT

Light is illuminated if Propane Flame fails to 'prove' (3 attempts to light and prove then 'lock out')

Light is illuminated if ECO (High temp t-stat OPENS 180*F)....this is whether on Electric or Propane as BOTH use the same set of t-stats
ECO will reset when temp of water drops below 150*F
ECO should only open when T-stat (normal temp t-stat has failed to open 140*F)

To 'RESET' water heater FAULTS
Turn ON/OFF Switch to OFF
Wait 30 seconds.....turn back ON (correct fault condition first)

Above ONLY applies to Atwood model WHs pre 2004
2003 and prior models had different sets of t-stats and simplified controls

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atwood, gas, heat, heater, water, water heater

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