GSI Outdoors PNEG-377 - Manual (Page 74)

74
Fan and Heater
ELECTRICAL CHECK-OUT CHART
For Units Using HF-7062 Control Board
All troubleshooting should be done with GAS SHUT OFF AT TANK. It is recommended to run drop cord
from 110 volt power source to test electrical system on heater. However NEVER RUN HEATER WITHOUT
IT BEING ELECTRICALLY INTERLOCKED TO FAN. This may cause unit to be severely damaged in case
of fan failure.
Before checking out any of the components on the HF-7062 heater controller board check to make sure that
there is power to the board. Turn on/off switch to on position, check voltage between terminals L1 to L2 on
the board there should be 110 volts present. If no voltage present check to make sure Heater housing high-
limit is reset. If housing high-limit is reset check it and the on/off toggle switch to see if they are defective. If
they check out OK then check to be sure that the unit has a good neutral. All tests below should be done with
power on and on/off switch in on position.
Purge Delay
Turn on/off switch to on position. There should be
110 volts between points A and B on board. If no
voltage present check out flame probe. If 110 volts
are present wait 15 seconds and check voltage
between points C and D on board if no voltage
present purge relay is possibly defective.
Flame Probe
Flame probe should be closed when cool and open
when warm. FLAME PROBE MUST BE COOL
(CLOSED) FOR UNIT TO START. Check voltage
between points A and B. If 110 volts is present then
flame probe is probably OK. If no voltage present
check between points B and C. If 110 volts present
flame probe is defective. If no voltage is present
check bin high limit.
Bin High-Limit
THERMOSTAT MUST BE PLUGGED IN AND
CALLING FOR HEAT FOR UNIT TO START.
Check voltage between points B and E. If 110 volts
present then vapor high-limit should be OK. If no
voltage present check between points F and B. If
110 volts present check out thermostat circuit. If no
voltage present check out vapor high-limit and
housing high-limit.
Vapor High-Limit
(Liquid units only)
VAPOR HIGH-LIMIT RESETS AUTOMATI-
CALLY. It must be cool to be closed. Check
voltage between points G and B on Board. If
voltage is present then vapor high-limit should be
OK. If no voltage present check between points H
and B. If voltage present then vapor high-limit is
probably defective. If no voltage present check for
bad connections on board or lack of a good neutral
line coming into heater.
Time Delay Reset
CHECK TO BE SURE TIME DELAY RESET IS
PUSHED IN (RESET CONDITION). Check
voltage between points I and J. If 110 volts present
then time delay reset should be OK. If no voltage
present check voltage between points I and D. If
110 volts are present then time delay reset is prob-
ably defective. If no voltage present the check
housing hi-limit or on/off switch.
IMPORTANT: After approximately 60 seconds of
heater operation with gas shut off reset button
should kick out. If it does not then check out flame
probe.