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124
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Service
'10 • HM-T-149
Actuator operation according to the operation mode
State Function
Run
status
Outdoor unit side Indoor unit side
Compressor
CM
Outdoor fan
FMo1
4-way valve
20S
Electric
heater
EB1
Circulation
pump
GP1
Shunt valve
QN11
Ball valve
QM30
Ball valve
QM31
Cooling
shift valve
QN12
Heating
Alternating
mode
Switching
between heating
and hot water
Heating
ON/OFF ON/OFF ON OFF ON
Closed
(B
⇒
AB)
Closed Open
Closed
(
⇒
A)
Hot water Open Closed
Heating
Combined mode
Outdoor unit
produces heating
and electric
heater supports
lack of capacity
Heating ON ON ON ON ON
Active
(B
⇒
A)
Closed Open
Closed
(
⇒
A)
Cooling
Switching
between cooling
and hot water
Cooling
ON/OFF ON/OFF
OFF
OFF ON
Closed
(B
⇒
AB)
Closed Open
Open
(
⇒
B)
Hot water ON Open Closed
Super Cooling
Outdoor unit
produces cooling
and electric heater
produces hot
water
Cooling ON/OFF ON/OFF OFF −
ON
Closed
(B
⇒
AB)
Closed Open
Open
(
⇒
B)
Hot water − − − ON
Hot water
Producing
hot water
Hot water ON ON ON
OFF
ON
Closed
(B
⇒
AB)
Open Closed
Closed
(
⇒
A)
Stopping OFF OFF ON OFF
Add. Heat only
Producing heating
and hot water with
electric heater
Heating
OFF OFF ON/OFF ON ON
Active
(B
⇒
A)
Closed Open
Closed
(
⇒
A)
Hot water
Defrost
Defrosting
outdoor unit heat
exchanger
Defrost
ON ON OFF
OFF
ON
Closed
(B
⇒
AB)
Closed Open
Closed
(
⇒
A)
Defrost 2 ON Open Closed
Shutdown
Only in the event
of serious alarms
Stop OFF OFF ON/OFF OFF ON
Closed
(B
⇒
AB)
Closed Open
Closed
(
⇒
A)
Note:
Defrost 2: When BT19 or return water temp. < Tank defrost temp.
Operation control function by the indoor unit controller
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