145
Check code
Main
remote
controller
P20
P22
Outdoor 7-segment display
Check code
Sub-code
P20
—
P22
0: IGBT shortage
1: Position detection
circuit error
3: Motor lock error
4: Motor current error
detection
C: TH sensor temp.
error
D: TH sensor error
E: Vdc error
AI-NET
central control
remote controller
22
1A
Detected
position
I/F
FAN-
IPDU
Check code
name
High-pressure
protective
operation
Outdoor fan
IPDU error
Status
All stop
All stop
All stop
All stop
All stop
All stop
All stop
All stop
Error detection condition
Pd sensor detected 3.6MPa or more.
(Sub-code: 0)
• Short-circuit current was detected at start time.
• Short-circuit current was detected when checking
IGBT short-circuit before start time.
(Sub-code: 1)
• The standard value of detection circuit of fan IPDU
current fluctuated at start time.
(Sub-code: 3)
• Abnormal current was detected within 30 seconds
after start time.
(Sub-code: 4)
• Short-circuit current was detected when 2 seconds
or more passed after start time.
• Over-current was detected when 30 seconds or
more passed after start time.
(Sub-code: C)
• Heat sink sensor (TH) of fan IPDU detected 95°C
error.
(Sub-code: D)
• Heat sink sensor (TH) of fan IPDU detected short-
circuiting or open.
(Sub-code: E)
• nput power supply voltage of the fan IPDU over the
setup value was detected.
• Input power supply terminal of the fan IPDU was
unconnected.
• Power supply P.C. board error of the fan IPDU
Check item (position)
• Check Pd pressure sensor error.
• Check full opening of service valves (Gas side, Liquid side).
• Check outdoor fan error.
• Check outdoor fan motor error.
• Check clogging of outdoor PMV. (PMV1,2)
• Check clogging of indoor/outdoor heat exchangers.
• Check air short-circuiting in outdoor unit.
• Check clogging of SV2 circuit.
• Check outdoor P.C. board (I/F) error.
• Check indoor fan system error.
(Cause of air volume decrease)
• Check valve opening of indoor PMV.
• Check miscabling of communication line between indoor
and outdoor.
• Check operation error of check valve of discharge pipe.
• Check circuit of gas balance SV4 valve.
• Check circuit of SV5 valve.
• Check refrigerant overcharge.
• Check fan motor. (Interphase short-circuit)
• Check fan IPDU error.
• Check fan IPDU error.
• Check fan motor. (Lock, phase missing)
• Check cause of abnormal overload at start time.
• Check connection of connector to fan motor.
• Check power supply voltage.
• Check fan IPDU error.
• Check outdoor fan system.
• Check fan IPDU error.
• Check fixation between fan IPDU and heat sink.
• Check fan IPDU error.
• Check input power supply voltage of the fan IPDU.
• Check power supply P.C. board error of the fan IPDU.
• Check error of external electrolytic condenser.
Содержание MMC-AP0151H
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