Forum Discussion
Old-Biscuit
Sep 14, 2018Explorer III
DC is used ONLY for FAN (1A fuse) and DC heater element if equipped (20A fuse)
NOTE:
DC NOT needed for propane operation
Burner/gas control/flame meter-----piezo spark and thermocouple
AC has 3A Fuse on HOT from terminal block ----that HOT goes to the 'Selector Switch' (OFF/GAS/AC-electric/DC-electric==battery)
AC Power Indicator is only lit when Selector Switch is in AC-Electric position AND AC Thermostat is NOT in OFF Position.
120V AC Circuit:
AC to terminal block then to/thru 3A Fuse to 1A on Selector Switch..then out of Selector Switch on 1B to Thermostat (Pin 4) AND to AC Indicator then from Indicator back to terminal block (neutral)
AC from Thermostat (Pin 3) to AC Heater Element then back to terminal block (Neutral)
AC not working...
3A Fuse
Selector Switch AC Position
AC Thermostat in ANY Position but OFF
AC Heater Element BAD
NOTE:
DC NOT needed for propane operation
Burner/gas control/flame meter-----piezo spark and thermocouple
AC has 3A Fuse on HOT from terminal block ----that HOT goes to the 'Selector Switch' (OFF/GAS/AC-electric/DC-electric==battery)
AC Power Indicator is only lit when Selector Switch is in AC-Electric position AND AC Thermostat is NOT in OFF Position.
120V AC Circuit:
AC to terminal block then to/thru 3A Fuse to 1A on Selector Switch..then out of Selector Switch on 1B to Thermostat (Pin 4) AND to AC Indicator then from Indicator back to terminal block (neutral)
AC from Thermostat (Pin 3) to AC Heater Element then back to terminal block (Neutral)
AC not working...
3A Fuse
Selector Switch AC Position
AC Thermostat in ANY Position but OFF
AC Heater Element BAD
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