Haier GE Vertical Zoneline AZ90E09D C, Technical Service Manual

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Fault
Code
Problem Action
1
Front panel button stuck for
more than 20 seconds Continue to monitor for "OPEN" (Unstuck) switch. Do not process
switch input.
2
Input voltage out of
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GE Vertical Zoneline stops, open all relays until voltage is back within
specs then resume operation.
3
Indoor temperature sensor is
open or shorted
GE Vertical Zoneline defaults to 75
°
F in COOLING or 68
°
F in
HEATING and will continue to operator if setting is below 75
°
F in
cool mode or if above 68
°
F in heat mode.
4
Indoor coil temperature sensor
is open or shorted
The GE Vertical Zonelines control board defaults to 40
°
F. It will
override the sensor and the GE Vertical Zoneline will continue to
operate.
5
Outdoor coil temperature
sensor is open or shorted
The GE Vertical Zoneline defaults to 20
°
F, overriding the sensor. The
GE Vertical Zoneline will continue to operate. Using electric heat if
available for HEATING. If not available, it will use HEAT PUMP if the
outdoor temperature allows.
6
Outdoor coil > (greater than)
175
°
F
The GE Vertical Zoneline will shut down for 5 minutes. Resume
operation for 3 minutes. If test fails 3 times, the GE Vertical Zoneline
operation is locked out. To reset, turn power off and on.
7
Indoor coil < (less than) 30
°
F
for 2 consecutive minutes
The compressor will turn off and the High Fan speed will run. When
coil temperature reaches 45
°
F, the GE Vertical Zoneline will resume
operation after lockout time.
8
Zoneline Cycles > (greater
than) 9 times per hour
The GE Vertical Zoneline will continue to operate and be monitored.
9
Zoneline Cycles < (less than)
3 times per hour
The GE Vertical Zoneline will continue to operate and be monitored.
10 Not applicable Not applicable
11
Wallstat problem or
connection issue The GE Vertical Zoneline will not operate.
12 Not applicable Not applicable
13 Not applicable Not applicable
14 Not applicable Not applicable
15
Heat pump fault If indoor coil temperature is less than ambient temperature for 3
minutes, the GE Vertical Zoneline will use electric heat to satisfy the
heating demand. Causes could be a bad reversing valve, or the heat
load is too high.
16
Temperature beyond operating
limits
Occurs if the indoor ambient temperature range falls below 0
°
F
or greater than 130
°
F. The fault code will remain on until the
temperature reaches the operating range and then the GE Vertical
Zoneline will return to normal operation.
17
Equipment doesn't meet
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The compressor must be enabled and have at least 2 fan speeds.
18 Not applicable Not applicable
19 Not applicable Not applicable
20 Not applicable Not applicable
21 Not applicable Not applicable
22
(Not a fault code)
Outdoor Coil temperature
< 30
°
F for 2 consecutive
minutes
GE Vertical Zoneline will use electric heat to satisfy heating demands
until the temperature equals or exceeds 45
°
F. Applicable for Heat
Pump models only.
23 Not applicable Not applicable
24 Not applicable Not applicable