Haier AB092FCAHA, Service Manual

Page: 76 / 174

minutes normally
14 Low pressure protection acts
（
Ps
）
Cooling: examine Ps below 0.2kgG/cm
2
for 30
seconds continuously after compressor starts
up;
Heating: examine Ps below -0.2kgG/cm
2
for 10
minutes continuously after compressor starts up;
recoverable
15 High pressure protection acts
（
Pd
）
Examine sensor Pd over 27.5kgG/cm
2
16 Suction temp. protection acts
（ TS ）
On compressor working, for continuous 10 minutes,
examine sensor TS over 40 ,
℃ recover after 2
minutes.
17 High pressure sensor Pd
circuit
For continuous 60 seconds, examine sensor Pd can
automatically run in support.
18 Low pressure sensor Ps
circuit For continuous 60 seconds, examine sensor Ps
below -0.95kgG/cm
2
or on inverter compressor
running individually ,when performance frequency is
below S3, examine sensor Ps is over 9kgG/cm
2
, can
automatically run in support.
19 At low frequency, discharging
temp. protection acts
（
TD
）
When inverter compressor performance frequency is
S3,S4, examine sensor TD1 is over 110
℃
20 857 receive 846
communication faulty
Continuous communication 200 seconds invalid,
alarms flashes.
21 846 receive 857
communication faulty
Continuous communication 200 seconds invalid,
alarms on LED
22 846 receive indoor unit failure Can not receive any signal from indoor unit for 4
minutes, alarms 22 on LED
23 846EEPROM/857EEPROM
failure
Alarms display on LED