Fault Codes - Carrier 25VNA Service Manual

FAULT DESCRIPTION SENT TO UI
--- ---
--- ---
--- ---
Communications Loss
Invalid Model
High Pressure Switch Open
Low Pressure Trip
Control Fault
Brownout
Lost Inverter Communications
230VAC Dropout---Reset Event
Outdoor Air Temp Sensor Fault
Suction Temp Sensor Fault
Coil Temp Sensor Fault
OAT ---OCT Thermistor Out of range
Suction Pressure Sensor Fault
OAT ---OST Thermistor Out of range
Compressor Scroll Temp Out of Range
Compressor Sump Heating Active
Inverter / Compressor Internal Fault
Compressor Motor Temp Out of Range
Suction Over Temperature
Inverter Temp Out of Range Event
Inverter Over Current
Compressor No---Pump Event
Suction Over Temp Lockout
Low Pressure Lockout for 4 hours
High Pressure Lockout for 4 hours
Compressor Temp Lockout
Compressor Temp Sensor Fault
Inverter Temp Lockout
Inverter VDC ---Out Over Voltage
Inverter VDC ---Out Under Voltage
230VAC Under Voltage
230VAC Over Voltage
High Current Lockout
VDC Under Voltage Lockout
VDC Over Voltage Lockout
High Torque Event
High Torque Lockout
--- ---
Status Codes
Most system problems can be diagnosed by reading the status code
as flashed by the amber status light on the control board.
The codes are flashed by a series of short and long flashes of the
status light. The short flashes indicate the first digit in the status
code, followed by long flashes indicating the second digit of the
error code.
Table 5—Fault Codes
FLASH CODE (AMBER LED)
Standby
Variable Capacity or Emergency
Mode
Variable Speed Range Cutback
16
25
31
32
45
46
48
49
53
54
55
56
57
58
59
68
69
71
72
75
77
79
82
83
84
85
86
88
91
92
93
94
95
96
97
98
99
OFF
The short flash is 0.25 seconds ON and the long flash is 1.0 second
ON. Time between flashes is 0.25 seconds. Time between short
flash and first long flash is 1.0 second. Time between code
repeating is 2.5 seconds with LED OFF.
Codes are easily read from user interface (UI)
EXAMPLE:
3 short flashes followed by 2 long flashes indicates a 32 code.
12
RESET TIME (minutes)
ON, no flash
1, pause
1 (2 sec ON), longer pause (1
second OFF)
NA
NA
15
15
NA
Revert to 5 min cycle delay
Revert to 5 min cycle delay
Revert to 5 min cycle delay
NA
15
NA
NA
15
5
15
2 HOURS
15
15
15
15
15
15
4 Hours
4 HOURS
4 HOURS
4 HOURS
15
4 HOURS
15
15
15
15
2 HOURS
2 HOURS
2 HOURS
10
2 HOURS
NA