Airwell YCV280, Installation And Maintenance Instructions Manual

Page: 372 / 412

4B 75-0
4C 76-3
4D 77
4E 78
4F 79
4C 76-1
4C 76-2
75-4
64 100
4B
99-X
63
digital
tube
indication
on master
unit
indication
on wired
controller
(hex)
failure
code
definition
failure description remarks
no pressure
drop between
high pressure
and low one
in 1 minute after inverter compressor starts up, Pd-
Ps<=0.1MPa. 2 minutes and 50 seconds later after
unit stops, resume automatically.
incorrect
outdoor
address or
capacity setting
incorrect
outdoor
address or
capacity setting
incorrect
outdoor
address or
capacity setting
slave unit quantity/address/horse power are not in
conformance with data in EEPROM of master unit:
quantity incorrect.
slave unit quantity/address/horse power are not in
conformance with data in EEPROM of master unit:
address incorrect.
slave unit quantity/address/horse power are not in
conformance with data in EEPROM of master unit:
horse power incorrect.
oil equalization
protection
among
outdoors
lack of
refrigerant
ToilA - ToilB<=10degree, unit alarms and stops, not
detecting in the course of startup, defrosting and oil
return control, and in 10 minutes after oil return finishes.
2 minutes and 50 seconds later after unit stops, resume
automatically. If it alarms twice continuously, confirm the
failure.
compressor running in cooling mode, Ps<0.1MPa for 30
minutes; compressor running in heating mode, Tsi -
ET>20; LEV will fully open for 60 minutes, the unit will
output lack of refrigerant alarm, unit will not stop.
incorrect wiring
30 minutes later after incorrect wiring is inspected,
outdoor: if Tdi<=Tao+30K, display failure code.
indoor: if in cooling, Tc2>=Tai - 20K, display failure
code; in heating, Tc1<=Tai+20K, display failure code.
resumable
once
confirmation
, un-
resumable
reset
once
confirmation
, un-
resumable
pressure drop
too low
between high
pressure and
low one
in heating mode, Tao>-10degree, or in cooling mode,
Tao>10degree, and Pd-Ps<=0.4MPa for 1 minute,
outdoor will stop. Or in heating mode, Tao<=-
10degree, Pd-Ps<=0.3MPa for 2 minutes, outdoor will
stop. Or in cooling mode, Tao<=10degree, Pd-
Ps<=0.3MPa for 1 minute, outdoor will stop. 5 minutes
later, restart up.
If over 6 times stop occur in 2 hours, alarm error and
unit stops.
self-diagnose
X=0~5
resumable
DC motor
driving board
IPM alarm
DC motor driving board alarms because of over current
or modular temperature too high, resume automatically
2 minutes and 50 seconds later after unit stops.It occure
3 times in an hour, confirm the failure.
once
confirmation
, un-
resumable
378