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Webasto BCT010300C Repair Manual Page 16

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Troubleshooting – BlueCool Truck Electrical System
Webasto Product N.A., Inc. 14 www.techwebasto.com
™
5. Troubleshooting – BlueCool Truck
Electrical System
5.1 General Information
This section describes how to identify and remedy faults
on the BlueCool Truck System.
Troubleshooting work demands precise
knowledge of the structure and theory of
operation of the various components and must be carried
out by trained personnel only.
The troubleshooting guide is restricted to
the localization of defective components.
The following potential sources of
malfunctions have not been included and should always
be checked so that they can then be excluded as the
cause of the particular fault:
• Tripped fuses
• Corrosion on plugs
• Loose plug contacts
• Poor crimp contacts on plugs
• Corroded cables and fuses
• Corroded battery terminals
A function test must be conducted in the vehicle after
rectifying a fault.
5.2 Malfunctions with System in
Charging Mode (Vehicle Key ON or
Vehicle Engine Running)
The following tables list the possible error symptoms.
If the actions listed in the following tables do not restore
proper operation, consult your authorized Webasto
dealer.
ATTENTION
The BlueCool control system has a built-in
delayed operation feature. The engine must
run 1/2 hour before the BlueCool Truck system will begin
the charging mode operation.
ATTENTION
During the half hour period before system
activation occurs, the “Key On Signal (KOS)
with 12V reference signal to control module” can be
checked for a 12 volt positive signal. Refer to Fig. 17, on
pg. 17.
Table 4. Symptom:
System does not begin operation after 1/2 hour delay period expires under normal operating conditions.
Possible Cause/Reason Inspection Remedy
Storage unit internal temperature
at 30 °F (–1 °C) or lower.
Outside (ambient) temperature at
45 °F (7.2 °C) or lower.
This is normal - unit will not begin operation until cold storage unit
internal temperature climbs above 30 °F (–1 °C).
This is normal - unit will not begin operation until outside (ambient)
temperature climbs above 60 °F (15.5 °C).
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