My friend has an older trailer with a GC6AA-9e water heater which is no longer available. It looks like the GC6AA10e is the best replacement but I notice the wiring is different. The 10e has a circuit board that is controlled by the electric/gas off-on switch. The 9e is only controlled by a gas off-on switch and the electric is run right from the electric panel and you use the circuit breaker to turn the electric off and on. Should there be any problem wiring the 120 right to the 10e like it is on the 9e ?
Replacing an Atwood GC6AA-9E with a GCAA-10E
- Thread starter dabrooks
- Start date
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Gary RV_Wizard
Site Team
Yes, the wiring is different. See this previous discussion: http://www.rvforum.net/SMF_forum/index.php?topic=108183.0
Basically the newer 10e requires that the 120v be wired direct to the heater but it is switched on/off by a 12v remote switch. There is a relay on the heater that the remote switch triggers.
Basically the newer 10e requires that the 120v be wired direct to the heater but it is switched on/off by a 12v remote switch. There is a relay on the heater that the remote switch triggers.
Gary RV_Wizard
Site Team
Conversion manual
Gary RV_Wizard
Site Team
Right. But you need to add the 12v switch circuit to actually turn that 120v on by activating the relay at the heater.
)Lou Schneider
Site Team
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- Mar 14, 2005
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I just wired the electric selector line to +12 volts so the circuit board keeps the electric element active and it functions just like my old water heater using the existing switches and wiring. The existing gas switch controls the gas burner, the external 120 volt electric switch controls the electric element.
The only difference is the light bulb inside the 12 volt switch is now a pilot light indicating the water heater is on, not that the flame has failed. That's OK because I can hear the flame inside the RV.
The only difference is the light bulb inside the 12 volt switch is now a pilot light indicating the water heater is on, not that the flame has failed. That's OK because I can hear the flame inside the RV.
