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9
099156
SYMPTOM
Pilot fails
to light.
Pilot lights
but goes
out when
automatic
control valve
button
is released.
Burn rate
is low.
POSSIBLE CAUSE
1. Propane supply valve closed
on propane tank(s).
2. Excess-flow check valve
closed.
3. Air in gas line.
4. Blockage in pilot orifice.
5. Piezo ignition system not
sparking.
1. Not enough warm-up time.
2. Low gas pressure.
3. Thermocouple loose or
needs to be replaced.
4. Automatic control valve
needs to be replaced.
1. Main burner valve not fully
open.
2. Plugged gas orifices.
3. Low gas pressure.
4. Low fuel supply.
REMEDY
1. Open propane supply valve
slowly.
2. Close propane supply valve on
propane tank and reopen
slowly.
3. Allow several minutes to purge
air with automatic control
valve button depressed.
4. Replace pilot orifice.
5. Adjust ignitor electrode gap to
.120". Check wire lead for
damage. Replace piezo ignitor
and/or ignitor electrode as
necessary.
1. Relight, hold automatic control
valve button in 45 seconds.
2. Check propane tank(s) for
proper gas supply.
3. Tighten connection or replace
thermocouple.
4. Replace automatic control
valve.
1. Fully open main burner valve
by turning the valve handle
towards ON position until it
stops.
2. Replace gas orifice.
3. Check gas supply; check
regulator output.
4. Consult propane gas supplier.
TROUBLE-
SHOOTING
You may have further ques-
tions about this heater. If so,
contact DESA International’s
Technical Service Department
at 1-800-323-5190.
!
WARNING
Never attempt to service heater while it is connected to
propane supply, operating, or hot. Severe burns can occur.