Carrier 25HNA Infinity
Series Installation Instructions Manual page 17

Winding
Start (S−C)
Run (R−C)
Winding
Start (S−C)
Run (R−C)
Status Codes
Table 7 shows the status codes flashed by the amber status light.
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.
THERMISTOR CURVE
90
80
70
60
50
40
30
20
10
0
0 20 40
TEMPERATURE (DEG. F)
Fig. 12 − Resistance Values Versus Temperature
Table 6—Two−Stage Compressor Resistances
(Winding Resistance at 70_F±20_)
25HNA624 25HNA636
2.74
0.80
25HNA924 25HNA936
1.40
1.32
60 80 100
25HNA648
1.98 1.55
0.75 0.48
25HNA948
1.29 1.52
0.89 0.64
The short flash is 0.25 seconds ON and the long flash is 1.0
second ON. Time between flashes is 0.25 seconds.
between short flash and first long flash is 1.0 second. Time
between code repeating is 2.5 seconds with LED OFF.
EXAMPLE:
3 short flashes followed by 2 long flashes indicates a 32 code.
Table 7 shows this to be low pressure switch open.
17
120
A91431
25HNA660
0.74
0.36
25HNA960
0.60
0.49
Time