Service manual

32
Heat operation
Initial
 HEATING
Vane setting notch

Vane initial setting

Defrosting

Heating area
Defrost release
Defrost
 30 min. elapse

Outdoor unit trouble
Four-way valve ON
Hor adjust
 in process
Compressor ON

Compressor
 thermostat ON
 Allowance cancel

Indoor piping
 -15°C or lower
Outdoor unit
 trouble
FAN SPEED
 Very low airflow
Compressor OFF
1
3 min.restart
 prevention
6 min. restart
 prevention
2
A
B
B
A
1
2
1
Hot adjust start
FAN SPEED very low
Compressor ON
10-minute
 compressor
 operation
Allowance caccel
Heating
 area

FAN STOP
Ariflow area
 20 min.elaspe
Airflow area
 Heating area
Outdoor unit
 trouble

Airflow area
 Cooling area
Defrost operation
 START
Four-way valve
 OFF
Indoor piping
 55°C or lower
Auxiliary heater
 ON
Indoor piping
 60°C or higher
Auxiliary heater OFF
Overheat remote
 START
Indoor unit
 70°C or higher
Allowance
 period
Overload protect
Auxiliary heater
 thermostat ON
Auxiliary heater ON
6-minute restart
 prevention
Allowance set
Compressor OFF
Indoor piping
 35°C or higher
HOT adjust
 6 min. elapse
FAN SPEED
 Low
FAN SPEED
 Low 2 min.
 elapse
FAN SPEED
 setting nitch
Hot adjust
 release
PKH-FK
 Type
3-minute
 Auxiliary heater
 OFF

 Indoor coil
 thermstor is 60°C
 or higher
FAN speed
 Low notti
Airflow 10% up
FAN setting notch
Auto COOL/HEAT
 operation
Initial mode

T1 T0
>
=
COOL mode  HEAT mode
COOL mode
 T1 < (T0 - 2)
After 15min.
 T1<(T0-2)
COOL operation HEAT operation
1
1
T1>(T0 + 2)
After 15min.
 T1>(T0 + 2)
HEAT operation
Cool mode
 set
NO
NO
NO
NO
NO
NO
NO
YES
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
w11
w9
w15
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES

w11
w11
w10
w16
w17
w11
HEATING OPERATION
w15 (!) Until Low airflow is set while hot adjustment
(
@) While defrosting (FAN STOP)
(
#) When thermostat is OFF
In the case of(
!), (@) and (#) above, airflow is horizontal regardless the VANE setting.
w16 When AUTO operation is started, COOL or HEAT mode is selected automatically.
w17 T1 : Room temperature.
To : Set temperature