YMGI WMMS-30CH-V2B(59)5, Руководство по обслуживанию, Страница: 50 / 81

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Flashing LED of Indoor/Outdoor Unit and Primary Judgement
1. Priority of the malfunction display.
When several malfunctions happen at the same time, each malfunction codes will be displayed in a series, and
repeat until the malfunction is resolved.
2. Malfunction display method
a. Hardware malfunction: it will be displayed immediately. P
lease refer to “Malfunction status table”
b. Operation status: it will be displayed immediately. P
lease refer to “Malfunction status table””
c. Other malfunction: It will be displayed after the compressor has been stopped for 200 seconds. Please
refer to “Malfunction status table”
(Note: when the compressor starts up again, malfunction display waiting time (200s) will be cleared.)
3. Malfunction display control Indoor unit displays malfunction code as shown in the sheet below. ODU
communication light will be off for 1s and then blink for 1s circularly.
Malfunction Malfunction Type
Nixie
tube
Zero cross detection circuit malfunction Hardware malfunction U8
Malfunction protection of jumper cap Hardware malfunction C5
Feedback of without IDU motor Hardware malfunction H6
Indoor ambient temperature sensor is open/short circuited Hardware malfunction F1
Indoor evaporator temperature sensor is open/short circuited Hardware malfunction F2
Liquid valve temperature sensor is open/short circuited Hardware malfunction b5
Gas valve temperature sensor is open/short circuited Hardware malfunction b7
Modular temperature sensor is open/short circuited Hardware malfunction P7
Outdoor ambient temperature sensor is open/short circuited Hardware malfunction F3
Outdoor condenser middle pipe temperature sensor is
open/short circuited
Hardware malfunction F4
Outdoor discharge temperature sensor is open/short
circuited
Hardware malfunction F5
Communication malfunction Hardware malfunction E6
Malfunction of phase current detection circuit for compressor Hardware malfunction U1
Communication malfunction Viewing malfunction code through
remote controller within 200
seconds.
Displayed directly on nixie tube
after 200 seconds
HE
Malfunction of phase current detection circuit for compressor U3
Communication malfunction P8
Malfunction of phase current detection circuit for compressor F0
Communication malfunction Hardware malfunction PU
Malfunction of phase current detection circuit for compressor Hardware malfunction E1
Communication malfunction Hardware malfunction E3
Compressor overload protection
Viewing malfunction code through
remote controller within 200
seconds.
Displayed directly on nixie tube
after 200 seconds
H3
Indoor unit and outdoor unit do not match Hardware malfunction LP
Malfunction of memory chip Hardware malfunction EE
Wrong connection of communication wire or malfunction of
electronic expansion valve
Hardware malfunction dn
Malfunction of complete units current detection Hardware malfunction U5
Malfunction protection of outdoor fan 1 Hardware malfunction L3