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Haier 2U18MS2VHB Service Manual page 126

Ductless multi-split heat pump, outdoor/indoor, wall mount - highwall, 2'x2' compact cassette, 3'x3' large cassette, slim duct, mid-static ducted, medium static ducted, console
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Table of Contents
Outdoor
Outdoor
Outdoor
Pro-Series
Multi-Zone
Single-Zone
LED Display
LED Display
LED1 Flash
(CAC)
(CAC)
(RAC)
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43
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44
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45
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46
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L0
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J-14
Master Error Code Chart
FAULT DESCRIPTION
Low refrigerant flow. Lockout.
Liquid pipe sensor failure: Circuit A
Liquid pipe sensor failure: Circuit B
Liquid pipe sensor failure: Circuit C
Liquid pipe sensor failure: Circuit D
Gas pipe sensor failure: Circuit A
Gas pipe sensor failure: Circuit B
Gas pipe sensor failure: Circuit C
Gas pipe sensor failure: Circuit D
Gas pipe sensor failure: Circuit E
Outdoor pipe temperature protection in cooling mode
Compressor overcurrent detected by IPM
Malfunction of module temperature sensor momentary
power failure detection
Malfunction of condensing temperature sensor
Liquid pipe sensor failure - Circuit E
Toci temperature sensor failure
High Pressure switch open
Low Pressure switch open
System high pressure protection: Overcharged, high
condensing temperature or malfunction of fan motor.
System low pressure protection: Undercharged, low
defrosting temperature, or malfunction of fan motor.
Incorrect match between indoor & outdoor
OAT less than -22°F (-30°C)
Indoor ambient temperature sensor failure
Indoor coil temperature sensor failure
Indoor PCB EEPROM failure
Communication fault between the indoor and outdoor unit
Communication fault between the controller and Indoor
unit
DC voltage of the fan motor driver too high or too low
Fan motor driver over 95°F (35°C)
Indoor fan motor out of step
Drain system malfunction
Zero cross signal detected wrong
Indoor fan motor malfunction
Indoor fan motor overcurrent
* Hidden indoor error code. LED1 will flash outdoors, but no error will appear on indoor unit display.
To view error code on indoor display, press and hold the Emergency button for 15 seconds.
TROUBLESHOOTING & REFERENCES
HIGHWALL CONSOLE
COMPACT CASSETTE
Panel LED Flash or
ID PCB LED Flash
Digital
Digital
Display
Display
Yellow Timer LED
(PCB LED5)
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F10
F10
4
F16
F16
4
F17
F17
5
F18
F18
5
F29
F29
5
F30
F30
5
F31
F31
5
F32
F32
5
F26
F26
5
F34
F34
5
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F35
F35
5
F36
F36
5
F33
F33
6
F38
F38
6
F39
F39
6
F40
F40
6
F41
F41
6
F42
F42
6
F43
F43
6
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E1
E1
0
E2
E2
0
E4
E4
0
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0
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E8
0
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E12
0
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E13 / C1
0
E14*
E14
0
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Green Run LED
(PCB LED1)
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8
9
0
1
2
3
4
5
6
7
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8
9
0
1
2
3
4
5
6
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1
2
4
7
8
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12
13
14
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