Filter
Top Products
59
Fan and Heater
TROUBLE-SHOOTING FLOW CHART
This chart should be used step by step to troubleshoot heater if heater does not start immediatly after
turning on switch. This troubleshooting flow chart requires use of a voltmeter to check for 110 volts
on designated terminals on terminal strip in heater. Always use voltmeter to check between termi-
nals that are designated not between terminals and ground.
Voltage
terms 1 and 8
Check incoming
power supply to
heater
Voltage
terms 2 and 8
Fuse blown or on/
off switch bad
Voltage
terms 4 and 8
Reset button
tripped or bad
Check
thermostat
Voltage
terms 4 and 5
Voltage
terms 6 and 8
Voltage
terms 7 and 8
Voltage
terms 4 and 3
Open
Flame Probe
Housing
HI-Limit
tripped or bad
Replace
Terminal Strip
Check Vapor
HI-Limit
NO
NO
NO
NO
NO
NONO
YES
YES
YES
YES
YES
YES
YES