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TK 56171-2-OP-EN
Alarm Codes
Introduction
An alarm code is generated when the microprocessor senses an abnormal
condition. Alarms direct an operator or service technician to the source of a
problem.
Multiple alarms can be present at one time. All generated alarms will be
stored in memory until cleared by the operator. Document all alarm
occurrences and report them to the service technician.
See “Alarms Menu” in the Operator’s Instructions Chapter for information
about viewing and clearing alarms.
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ntt:: Always record any Alarm Codes that occur in the order that they
occur – as well as any other pertinent information. This
information is extremely valuable to service personnel.
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1. Some alarms (3, 4, 74, 203, and 204) cannot be cleared in the
Alarms Menu, they must be cleared in the Maintenance Menu or
the Guarded Access Menu. Contact your supervisor or a Thermo
King dealer about clearing those alarms.
2. In some cases alarms cannot be cleared, or cannot be cleared
after they have occurred a specified number of times. If such is
the case, these alarms must be cleared by a service technician.
Alarm Types
There are four types of alarms.
Log Alarms
Log Alarms are indicated for 30 seconds each time the unit is turned on. This
level of alarm serves as a notice to take corrective action before a problem
becomes severe. Maintenance items such as maintenance hourmeter time-
outs are Log Alarms. The TemperatureWatch
™
screen is not disabled if only
Log Alarm(s) are active.
When the unit is turned on, the display will show the Thermo King Logo and
then the “Configuring System” message. If Log Alarm(s) are present, the
Log Alarm notice will appear on the display for 30 seconds. The remote
indicator alarm light (if installed) will also be on during this period. After 30
