Thermo King CRR-20, Maintenance Manual

Page: 61 / 200

CRR-20 & CRR-40, September 1999
µ
P-D Controller Pause Alarms 4-7
Alarm
Code Type Description
00 No Fault
02 Check Ambient Temperature Sensor Failure
03 Check Supply Air Temperature Sensor Failure
04 Check Evaporator Pressure Regulator (KVQ)
Valve Thermistor Failure
05 Check Evaporator Coil Temperature Sensor
Failure
06 Check Humidity Sensor Error
07 Check Return Air Temperature Sensor Failure
09 Shutdown Evaporator Coil Over Temperature
10 Check High Pressure Cutout
12 Check Temperature Out-of-Range High
13 Check Temperature Out-of-Range Low
14 Check Defrost Terminated on Time Limit
16 Shutdown Digital Input Failure
25 Check/ Return & Supply Temperature Sensor
Shutdown Failure
37 Shutdown Low Refrigerant Level (Option)
38 Check Real Time Clock Battery Failure
41 Check Spare Sensor 5 Failure (Option)
42 Check Customer Configuration Alarm
43 Shutdown Frequency Out-of-Range Low
44 Shutdown Three Phase Current Imbalance
45 Shutdown Frequency Out-of-Range High
46 Check USDA Sensor 1 Failure (Option)
47 Check USDA Sensor 2 Failure (Option)
48 Check USDA Sensor 3 Failure (Option)
49 Check Pulp Sensor Failure (Option)
50 Check/ Compressor Current Out-of-Range
Shutdown (Pretrip)
51 Check/ Unit Current Out-of-Range in Cool Mode
Shutdown (Pretrip)
52 Check/ KVQ Valve System Failure (Pretrip)
Shutdown
53 Check/ Heating Current Out-of-Range (Pretrip)
Shutdown
54 Check/ Defrost Current Out-of-Range (Pretrip)
Shutdown
55 Check/ High Speed Evaporator Fan Failure
Shutdown (Pretrip)
56 Check/ Low Speed Evaporator Fan Failure
Shutdown (Pretrip)
57 Check/ Condenser Fan Current Out-of-Range
Shutdown (Pretrip)
58 Check/ Sensor Calibration Failure (Pretrip)
Shutdown
59 Check Datalogger Full (
µ
P-A+)
60 Check Datalogger Full (Global)
61 Check Real Time Clock Invalid
63 Check Bypass Valve Circuit Failure (Pretrip)
64 Check Pretrip Preconditioning Failure
65 Check Datalog Queuing Error
69 Check Dehumidify Valve Circuit Failure
(Pretrip) (Option)
70 Check Hourmeter Alarm
71 Check User Hourmeter 1 Expired
72 Check User Hourmeter 2 Expired
73 Check User Hourmeter 3 Expired
74 Check User Hourmeter 4 Expired
79 Check Datalogger Overflow
81 Check Compressor Head Temperature Sensor
Failure
82 Check Compressor Head Over Temperature
85 Check/ Compressor Current Out-of-range
Shutdown
92 Check Condenser Fan Sensor Failure
97 Shutdown Loss of Communications with Output
Module
Pause Alarms
A Pause Alarm (“PAUSE ALMXX”) stops unit operation due
to a shutdown alarm condition. A 2-digit alarm code (“XX”)
appears in Pause display to identify the alarm condition.
Typically the condenser fan continues to operate while the
controller attempts to correct the condition and restart the unit.
“PAUSE ALMXX” appears in the display for 1 second every
10 seconds until the condition has been corrected. The follow-
ing Alarm Codes generate a Pause Alarm display:
• 10, High Pressure Cutout
• 43, Frequency Out-of-Range, Low (low supply voltage)
• 82, Compressor Head Over Temperature
NOTE: “PAUSE ALM43” will also appear in the con-
troller display when the Setpoint Enable function is
activated to download the controller data logger or
change the setpoint.
“PAUSE ALM10”, High Pressure Cutout
The controller immediately stops the compressor and evapora-
tor fans when the high pressure cutout switch opens. The con-
denser fan and phase select outputs remain energized as the