Page 34
Troubleshooting Chart
TROUBLE
CAUSE
REMEDY
Replace relay.
Replace thermostat.
Replace thermostat.
Close door.
Check for correct control voltage - 24V.
Check power supply, check secondary voltage on
transformer, check wiring and wiring diagram.
CLOSE Lint Door.
Replace Valve Assembly.
Turn Manual Gas Valve ON.
Check ground.
Open for blue flame.
Blow out.
Check rating plate for correct gas pressure.
Send to factory for correct orifices.
Clean exhaust.
Replace orifices -- check factory for correct size.
Replace orifices -- check factory for correct size.
Make-up air must be 4 to 6 times the exhaust area of the
dryer.
Remove lint.
Must be full open or replace.
Adjust gas pressure as specified on rating plate.
Check installation sheet in service section for
recommended sizes. Check for and remove obstructions or
lint build-up from duct work. Never use smaller size
exhaust duct. Always use larger size exhaust duct.
Replace thermostat.
Defective relay.
Defective
thermostat.
Defective safety
overload
thermostat.
Lint compartment
door open.
Incorrect voltage.
No voltage.
Lint door OPEN.
Defective Gas
Valve.
Gas turned OFF.
Spark Igniter not
igniting gas.
Burner air shutters
closed.
Dirt in burner.
Gas pressure too
high.
Orifice too large.
Restricted or
blocked exhaust.
Incorrect main
burner orifices.
Incorrect main
burner orifices.
Inadequate make-up
air.
Lint accumulated.
Exhaust duct
dampers.
Gas pressure too
high.
Partially restricted
or inadequately
sized exhaust
system.
Defective
thermostat.
Dryer runs, but no heat
(continued).
Main burners burning
improperly.
Low gas flame or high gas
flame.
Dryer too hot.
Summary of Contents for HD150.1
Page 10: ...Page 10 150 lb Gas Fired Dryer Illustration ...
Page 13: ...Page 13 Gas Piping Installation Illustration ...
Page 15: ...Page 15 150 lb Steam Heated Models Illustration ...
Page 22: ...Page 22 Dryer Installation with Multiple Exhaust Illustration ...
Page 30: ...Page 30 Two Timer Models Figures 1 2 and 3 Illustrations ...
Page 38: ...Page 38 DIRECT SPARK IGNITION OPERATION FLOW CHART ...
Page 42: ...Page 42 Basket Alignment for 150 lb Dryers Illustrations ...
Page 44: ...Page 44 Shimming the Basket and Spider Assembly Illustration ...
Page 67: ...Page 67 ...