McQuay MCK User Manual

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

McQuay MCK Specifications

General

Brand	McQuay
Model	MCK
Category	Air Conditioner
Language	English