48
TSR/TSR-3 ALARM CODES
46 Check Air Flow If unit is shut down
repair immediately.
Otherwise, report
alarm at end of the
day.
47 Remote Sensor
shutdown
Unit/zone cannot
operate and is
shutdown, needs to
be repaired
immediately.
48 Check Belts or
Clutch
If unit is shut down
repair immediately.
Otherwise, report
alarm at end of the
day.
49 Check spare
sensor 1
Report alarm at end
of the day.
50 Reset Clock Report alarm at end
of the day.
51 Check Shutdown
circuit
If unit is shut down
repair immediately.
Otherwise, report
alarm at end of the
day.
52 Check Heat
Circuit
If unit is shut down
repair immediately.
Otherwise, report
alarm at end of the
day.
Code Description Operator Help
53 Check
Economizer valve
circuit
If unit is shut down
repair immediately.
Otherwise, report
alarm at end of the
day.
54 Test Mode
Timeout
Service Test or
Interface Board Test
timed out after 15
minutes. Report
alarm at end of the
day.
55 Check engine
speeds
Report alarm at end
of the day.
56 Check evaporator
fan low speed
(zone)
If unit is shut down
repair immediately.
Otherwise, report
alarm at end of the
day.
57 Check evaporator
fan high speed
(zone)
If unit is shut down
repair immediately.
Otherwise, report
alarm at end of the
day.
61 Low Battery
Voltage
If unit is shut down
repair immediately.
Otherwise, report
alarm at end of the
day.
Code Description Operator Help
62 Ammeter Out of
Calibration
If unit is shut down
repair immediately.
Otherwise, report
alarm at end of the
day.
63 Engine Stopped If unit is shut down
repair immediately.
Otherwise, report
alarm at end of the
day.
64 Pretrip Reminder Report alarm at end
of the day.
66 Low Engine Oil
Level
Check engine oil
level. If unit is shut
down repair
immediately.
Otherwise, report
alarm at end of the
day.
67 Check Liquid Line
Solenoid Circuit
If unit is shut down
repair immediately.
Otherwise, report
alarm at end of the
day.
68 Internal Controller
Fault Code
Report alarm at end
of the day.
70 Hourmeter Failure Report alarm at end
of the day.
74 Controller Reset
to Defaults
Report alarm at end
of the day.
Code Description Operator Help