Haier GE NF80US Service Manual page 17

P49
5
4
3
2
1
N
G
Test 1
Turn on power to unit. Check for 120 volts across terminals
"L" and "N" on input plug P48. If voltage is present continue
to test 2. If voltage is not present, problem may be
upstream of plug P48. Proceed to test 3.
P49
5
4
3
2
1
N
Test 2
Switch thermostat to CONTINUOUS FAN MODE. Check for
24 volts across terminal "C" on input plug P48and speed tap
used for continuous fan. (1, 2, 3, 4 or 5) on input plug P49. If
24 volts is not present problem may be up stream of plug P49.
Proceed to test 4.
31-5000735 Rev. 0
Multi−Meter
(set to VAC)
12 12
0 0
L
C
P48
Multi−Meter
(set to VAC)
G
L
C
P48
Test 3 (if necessary)
Check for 120 volts across terminals "CIRC" and "Neutrals"
on the integrated control. If voltage is present, problem is
with the harness. If voltage is not present problem may be
may be with the integrated control.
24
Test 4 (if necessary)
Check for 24 volts across terminals "24 COM" and "FAN"
terminals on the integrated control. If voltage is present,
problem is with the harness. If voltage is not present,
problem may be may be with the integrated control.
Figure 14.
Page 17
Multi−Meter
(set to VAC)
12 12
0 0
Multi−Meter
(set to VAC)
24