Lennox LNINVC052, Руководство по обслуживанию

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57
Installation and Maintenance
Service Manual
20
Overcurrent
protection of
phase current
P5
Flash
15 times
every 3s
□ ☆ □ □
During cooling
and drying
operation,
compressor and
outdoor fan stop
while indoor
fan operates.
During heating
operation, all
loads stop.
See 9.3
(diagnosis of
IPM protection,
desynchronizing
malfunction,
overcurrent
protection of
phase current of
compressor)
Refer to
maintenance
flowchart
21 Defrosting
ON 10s
and OFF
0.5s
Normal function
22
Overload
protection of
compressor
H3
Flash
3 times
every 3s
□ ☆ ☆ □
During cooling
and drying
operation,
compressor and
outdoor fan stop
while indoor
fan operates.
During heating
operation, all
loads stop.
1:Wiring
terminal OVC-
COMP is loose
(Under normal
circumstances,
the resistance
between both
ends of this
terminal should
be less than 1Ω.)
1. After de-
energization,
insert OVC-
COMP terminal
tightly;
2: See 9.3
(diagnosis of
overload and
discharge
protection)
2. Refer to
maintenance
flowchart
23
IPM
protection
H5
Flash
5 times
every 3s
□ ☆ □ ■
During cooling
and drying
operation,
compressor and
outdoor fan stop
while indoor
fan operates.
During heating
operation, all
loads stop.
See 9.3
(diagnosis of
IPM protection,
desynchronizing
malfunction,
overcurrent
protection of
phase current of
compressor)
Refer to
maintenance
flowchart