Fault 1229: Furnace Door Temp Is High Alarm (190F); Fault 1230: Furnace Door Temp Is High Warning (180F); Fault 1231: Ambient Temp Sensor Not Connected; Fault 1232: Ambient Temp Sensor Voltage High - Staheli West DewPoint 331 Owner's Manual

Fault 1229: Furnace Door Temp is High Alarm (190F)

Fault 1230: Furnace Door Temp is High Warning (180F)

Causes
• Failed insulation board/rope-
gaskets.
• Faulty sensor.
• Faulty wiring.

Fault 1231: Ambient Temp Sensor Not Connected

Indicates ≥0.5 volts is not present on the signal wire.
Causes
• Sensor disconnected.
• Faulty sensor.
• Faulty wiring.

Fault 1232: Ambient Temp Sensor Voltage High

Indicates >4.5 volts is present on the signal wire.
Causes
• Faulty sensor.
• Faulty wiring.
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Faults
Troubleshooting
• Check condition of rear furnace
door insulation by removing the
burner gun assembly and looking
through the burner blast tube.
The rear door insulation should
not have significant cracks or
breaks.
• Use infrared thermometer to
check rear furnace door.
• Check the rear furnace door for
paint bubbling and discoloration
from excessive heat.
• Use infrared thermometer to
check rear furnace door area for
normal temperatures.
• Inspect the wiring for ground,
continuity, and proper voltage.
Troubleshooting
• Swap with compatible sensor
(See sensor page).
• Inspect the wiring for ground,
continuity, and proper voltage.
Troubleshooting
• Swap with compatible sensor
(See sensor page).
• Inspect the wiring for ground,
continuity, and proper voltage.
© 2021 Staheli West
Fixes
• Replace rear furnace door
insulation and rope gaskets.
• Replace sensor.
• Repair/Replace wiring.
Fixes
• Connect sensor.
• Replace sensor.
• Repair/Replace wiring.
Fixes
• Replace sensor.
• Repair/Replace wiring.