Haier SYJS-0308 Service Manual page 76

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