Section 22: HEATING AND AIR CONDITIONING
PA1562
48
- Defective combustion air fan motor - Replace combustion air fan
9X Flashes (F 09)
Circulation pump motor
- Wiring
- Defective circulation pump motor
- Damaged wiring, open or short circuit
- Replace circulation pump motor
10X Flashes (F 10)
Temperature limiter
- Overheat condition
- Coolant flow
- Wiring
- Defective temperature limiter
- Reset temperature limiter
- Coolant level or flow restriction
- Air trapped in coolant circuit
- Damaged or corroded wiring, open or short circuit
- Replace temperature limiter
11X Flashes (F 11)
Electronic ignition coil
- Wiring
- Defective electronic ignition coil
- Damaged wiring, open or short circuit
- Replace electronic ignition coil
12X Flashes (F 12)
Heater lock out
- 3 repeated faults/flame-outs or
5 repeated start attempts
- Reinitialize control unit by switching heater on
and disconnecting power.
9.8.5 Troubleshooting and Maintenance
Refer to the Webasto manual for more information.
NOTE
If there are no heater faults, the heater will go through a normal start cycle and regulate based on
thermostat setting.
NOTE
Switch on the preheating system briefly about once a month, even during the warm season.
CAUTION
When welding on the vehicle, disconnect the preheater module connector in order to protect this
system from voltage surges.
CAUTION
To avoid running down the batteries, do not turn on the preheating system for more than one hour
before starting the engine.
DANGER
The preheating system uses the same fuel as the engine. Do not operate in a building or while
refueling. Operate only in a well-ventilated area.
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