York DHP30NWB21SDCP30NWB21SDHP36NWB21SDCP36NWB21S, Руководство по обслуживанию, Страница: 47 / 89

40
NO.
Malfunction
Name
Display Method of Indoor Unit Display Method of Outdoor Unit
A/C status Possible Causes
Dual-8
Code
Display
Indicator Display (during
blinking, ON 0.5s and OFF
0.5s) Indicator has 3 kinds of display
status and during blinking, ON
0.5s and OFF 0.5s
Operation
Indicator Cool
Indicator Heating
Indicator Yellow
Indicator
Red
Indicator
Green
Indicator
53
Normal
communica-
tion
54 Defrosting
OFF 3S
and blink
once
(during
blinking,
ON 10s
and OFF
0.5s)
OFF 0.5S
and blink
once
OFF 1S
and blink
twice
Defrosting will occur in
heating
mode.
Compressor will operate
while indoor fan will stop
operation.
It ' s the normal state
55
Malfunction
of zero-cross
detection
circuit
U8
The complete unit stops
1.Power supply is abnormal;
2.Detection circuit of indoor
control mainboard is abnormal.