Service manual

19
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 cancel
Heating
area
FAN STOP
Airflow 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
PLH-KKHB
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
11
T
1>(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
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
NO
NO
NO
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
w15
YES
YES
YES
YES
YES
YES
w9
w11
w11
w10
w16
w17
w11
HEATING OPERATION
AUTOMATIC COOLING/HEATING OPERATION
w15 ( i ) Until Low airflow is set while hot adjustment
(ii)While defrosting (FAN STOP)
(iii)When thermostat is OFF
In the case of( i ), (ii) and (iii) 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