Webasto BlueHeat Installation Instructions Manual - page 18
15
BlueHeat
TM
Coolant Heater
Basic Troubleshooting
General Malfunction Symptoms
The following table lists possible malfunction symptoms and remedies.
PC Diagnostics Interface Kit
CAUTION
Diagnostics equipment is intended for use by Webasto trained personnel at authorized Webasto Distributor,
Dealer and End User service facilities.
A PC Diagnostic Interface kit for the BlueHeat is available that allows for more thorough testing and troubleshooting
of the heater and its components beyond the scope of this installation manual. The diagnostic kit makes it possible
to read and remove (reset) stored malfunction codes from the BlueHeat memory.
The PC Diagnostic Interface Kit comes complete with connecting hardware, software and instructions for use with
any IBM/PC compatible computer. Also available are several interface connectors for use with Webasto heaters
equipped with internal diagnostic capabilities such as the BlueHeat.
In addition to working with stored malfunction codes, the PC Diagnostics Interface Kit allows you to perform several
other functions such as reading values while the heater is in operation or testing individual components. Printing
out malfunction codes is also available (User supplied printer required).
For further capabilities and instructions for use with the BlueHeat heater, see the instruction manual supplied with
the PC Diagnostics Interface Kit.
Order PC Diagnostics Interface Kit under part number 92542F. Kit does not include required adapter for the
BlueHeat and must be included in your order. Order adapter under part number 92566A.
Malfunction Symptom
Probable Cause
Remedy
Coolant heater switches
off automatically (Fault
lockout)
No combustion after start
or automatic repeat start
Flame extinguishes during
operation
Heater overheats
Vehicle electrical system
voltage too low
Switch off heater momentarily and switch on once
again
Switch off heater momentarily and switch on once
again
Check coolant lines for obstructions, closed valves
and kinks.
Check coolant level. Allow heater to cool down,
reset overheat limiter, switch off heater
momentarily and switch on once again
Charge battery
Switch off heater momentarily and switch on once
again
Heater expels black fumes
from exhaust
Combustion air and/or
exhaust tubing blocked
Check combustion and exhaust tubing for
obstructions