EXCESSIVE SMOKING AT
EXHAUST PORT AND
BUILDUP OF CARBON IN
HEAT EXCHANGER
Air inlet tube blocked Check for plugged or
blocked air inlet tube and
clear if necessary
Low voltage Check for low voltage, at
least 11 VDC
Defective pressure regulator Check for defective pressure
regulator. There should be 11
inches water pressure in the
propane supply line at the
connector.
HEATER DOESN’T SWITCH
OFF AFTER PURGE (COOL
DOWN) CYCLE
Flame switch will not open Replace
237REVISED: