63
Installation and Maintenance
Service Manual
9
Blockage
protection of
indoor unit
H6
Flash
11 times
every 3s
Indoor fan, outdoor fan,
compressor and electric
heating tube all stop
operation; horizontal louver
stops at current position.
Feedback terminal of PG
motor hasnt been inserted
tightly.
Refer to maintenance
flowchart
Control terminal of PG
motor is not inserted
tightly.
Fan is blocked
Malfunction of motor.
Circuit malfunction of
main board.
10
Malfunction
protection of
jumper cap
C5
Flash
15 times
every 3s
Operation of remote
controller or control panel is
available, but the unit wont
act.
Jumper cap hasnt been
inserted on main board.
Refer to maintenance
flowchart
Jumper cap hasnt been
inserted correctly and
tightly.
Jumper cap is damaged.
Circuit of main board is
abnormal.
11
Indoor fan circuit
malfunction
by zero cross
detection
U8
Flash
17 times
every 3s
Operation of remote
controller or control panel is
available, but the unit wont
act.
1. Discharging speed of
capacitor is slow, which
lead to wrong judgement
of controller.
Refer to maintenance
flowchart
Zero-crossing detection
circuit of main board is
abnormal
