Forum Discussion
Old-Biscuit
May 29, 2017Explorer III
Atwood doees NOT use the switch in outside compartment..........only Suburban does
Works on LP but not on electric.
LP and Electric use SAME DC controls, t-stats etc.
Red Light ON (fault light) only comes on when using electric when the ECO (high temp t-stat) opens
That means it sensed high temps of 180*F OR the wire connections on ECO are not making good contact.
So IF you have water in water heater and red light is on when you turn electric switch on then in outside compartment unplug, clean & replug wire spade connectors on ECO
Due to same t-stats/controls being used for both LP and Electric a milvolt current must go from circuit board to ECO on RED wire and the to gas control so that the ECO is a functioning part of controls (HI temp cutout backing up normal temp t-stat).
Doesn't take much resistance to stop milivolt current from flowing.
Circuit board not sensing ECO in circuit---Fault light ON (Red light at on/off panel)
Works on LP but not on electric.
LP and Electric use SAME DC controls, t-stats etc.
Red Light ON (fault light) only comes on when using electric when the ECO (high temp t-stat) opens
That means it sensed high temps of 180*F OR the wire connections on ECO are not making good contact.
So IF you have water in water heater and red light is on when you turn electric switch on then in outside compartment unplug, clean & replug wire spade connectors on ECO
Due to same t-stats/controls being used for both LP and Electric a milvolt current must go from circuit board to ECO on RED wire and the to gas control so that the ECO is a functioning part of controls (HI temp cutout backing up normal temp t-stat).
Doesn't take much resistance to stop milivolt current from flowing.
Circuit board not sensing ECO in circuit---Fault light ON (Red light at on/off panel)
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