Section 5 – SR-2 Diagnostics
136 CHECK SPARE DIGITAL OUTPUTS
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Alarm Type
Check Alarm (Pretrip Only)
Associated Alarm
Codes
How Alarm is Set
The Pretrip test indicates that a connection has been made to a spare digital output and should not have been.
How Alarm is Cleared
This alarm is cleared manually.
Diagnostic Procedure
Correct the wiring error.
137 CHECK DAMPER MOTOR HEATER OUTPUT
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Alarm Type
Check Alarm
Associated Alarm
Codes
Alarm Code 30 Defrost Damper Stuck
Component Description and Location
Circuit Description
On units equipped with a damper gear motor, the damper solenoid output is used to control the motor heater.
How Alarm is Set
Alarm is set if the measured shunt current is incorrect during non running pre-trip. Current is measured with the
output on and off.
How Alarm is Cleared
This alarm is cleared manually.
Diagnostic Procedure
If the unit is misconfigured an alarm 137 may occur, instead of an alarm code 29.
5-79
02 February 2005
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