MCQUAY Service Guide Book
Diagnosis
62
7.2 Error Codes Diagnosis By Handset
SLM 3 / Netware 3 / SLM 9 – On/Off Models
Error Code
Faulty Indication
E1
Room air sensor contact loose / short
E2
Indoor coil sensor contact open
E3
Outdoor coil sensor contact open
E4
Compressor overload protection/ Indoor coil sensor short/ Outdoor coil sensor short
E5
Gas leak
E6
Water Pump fault*
E7
Outdoor coil sensor exist (Multi-split model)
E8
Hardware error (tact switch pin short)
LO
Room temperature below 8ºC(46 ºF)
HI
Room temperature above 37ºC(99 ºF)
OP
Working room sensor is open
SH
Working room sensor is short
HEAT LED
blinking
Defrost mode (SLM3 only)
*Applicable for Ceiling Cassette Model only.
*SLM 3 and SLM 9 only display Error Code E1 to E6.
SLM 3 / Netware 3 – Fan Coil Unit
Error Code
Faulty Indication
E1
Room sensor short / open
E2
Pipe water sensor short / open
E4
Pipe water temperature poor
E5
Pipe water temperature fault
E6
Water pump fault
SLM 3 – Inverter X Models
Error Codes
Faulty Indication
E1
Indoor temperature sensor loose / short
E2
Outdoor temperature sensor loose / short
E3
Communication error
E4
Compressor overload protection
E5
Pump fault
E6
Compressor overheat / gas leak
E7
IPM / PFC / Partial switching
E8
Outdoor over current
E9
Indoor fan feedback error
Содержание 5MDS
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