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© 2022 Staheli West
135
Faults
Fault 15: Flame Detected (Standby)
Indicates that a flame has been detected when there should not be a flame.
Causes
Troubleshooting
Fixes
• Flame in boiler.
• Check for burning/smoldering
debris inside the boiler.
• Manually latch CR-1 (Panel 1)
relay on to start the fan and blow
out the fire.
• Wait for flame to burn out.
• Moisture/Dust in the
flame
detector lens.
• Remove fish-eye lens and
photocell tip and inspect for
moisture (even the slightest
amount of moisture can cause
Fault 18 to occur).
• Clean and dry thoroughly the
whole
flame detector assembly
(This may require several minutes
to air out these components
completely) (Weatherproof if
needed).
• Wet photocell.
• Remove and inspect photocell.
• Dry photocell.
• Faulty
flame detector or
photocell.
• Perform “Test 1”.
• Replace flame detector or
photocell.
• Faulty wiring.
• Inspect the wiring for ground,
continuity, and proper voltage.
• Replace/Repair wiring.
Fault 17: Main Flame Fail (see Fault 220)
Indicates that the flame detector cannot detect flame during run mode (low fire/high fire).
Causes
Troubleshooting
Fixes
• Clogged burner fuel filter.
• Replace burner fuel filter.
• Faulty fl
ame detector or
photocell.
• Perform “Test 1”.
• Replace flame detector or
photocell (check other causes
before buying a new component).
• Moisture/Dust in the flame
detector lens.
• Check inside the lens for
moisture.
• Remove and dry flame detector
lens (weatherproof if needed).
• Faulty/Loose amplifier card.
• Check the amplifier card is
seated properly.
• Replace/Re-seat amplifier card
(Re-seat and secure in place with
tape or a tie wrap).
• Restricted fuel flow through
the main and safety fuel solenoid
valves.
• Inspect fuel paths, check for
overtightened fittings.
• Remove restrictions.
• No fuel flow through the main
and safety fuel solenoid valves.
• Perform “Test 2”.
• Replace faulty fuel solenoid
valve.
• Pilot flame lost just before main
ignition.
• This will also cause a Fault 28.
Check your propane valve and
pressure.
• Turn propane valve on.
• Refill/Replace propane tank.
• Loose/Leaking/Faulty fuel
nozzle.
• Remove burner gun and inspect
nozzle.
• Tighten/Replace nozzle.
• Loose set screw on fuel pump
shaft coupler.
• No/Low fuel psi with fan
turning.
• Tighten set screw.