Mitsubishi Heavy Industries FDCW100VNX, Technical Manual

Page: 83 / 173

Service
- 82 -
Actuator operation accor
ding 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
QN1
1
Ball valve
QM30
Ball valve
QM31
&RROLQJ
shift valve
QN12
+HDWLQJ $OWHUQDWLQJ
mode
6ZLWFKLQJ
EHWZHHQKHDWLQJ
and hot water
+HDWLQJ
212))
212))
ON
OFF
ON
Closed
(B
⇒
AB)
Closed
Open
Closed
(
⇒
A)
Hot water
Open
Closed
+HDWLQJ
Combined mode
Outdoor unit
SURGXFHVKHDWLQJ
and electric
heater supports
lack of capacity
+HDWLQJ
ON
ON
ON
ON
ON
Active
(B
⇒
A)
Closed
Open
Closed
(
⇒
A)
&RROLQJ
6ZLWFKLQJ
EHWZHHQFRROLQJ
and hot water
&RROLQJ
212))
212))
OFF
OFF
ON
Closed
(B
⇒
AB)
Closed
Open
Open
(
⇒
B)
Hot water
ON
Open
Closed
6XSHU&RROLQJ
Outdoor unit
SURGXFHVFRROLQJ
and electric heater
produces hot
water
&RROLQJ
212))
212))
OFF
í
ON
Closed
(B
⇒
AB)
Closed
Open
Open
(
⇒
B)
Hot water
ííí
ON
Hot water
3URGXFLQJ
hot water
Hot water
ON
ON
ON
OFF
ON
Closed
(B
⇒
AB)
Open
Closed
Closed
(
⇒
A)
6WRSSLQJ
OFF
OFF
ON
OFF
Add. Heat only
3URGXFLQJKHDWLQJ
and hot water with
electric heater
+HDWLQJ
OFF
OFF
212))
ON
ON
Active
(B
⇒
A)
Closed
Open
Closed
(
⇒
A)
Hot water
Defrost
'HIURVWLQJ
outdoor unit heat
H[FKDQJHU
Defrost
ON
ON
OFF
OFF
ON
Closed
(B
⇒
AB)
Closed
Open
Closed
(
⇒
A)
Defrost 2
O
N
Open
Closed
Shutdown
Only in the event
of serious alarms
Stop
OFF
OFF
212))
OFF
ON
Closed
(B
⇒
AB)
Closed
Open
Closed
(
⇒
A)
Note:
Defrost 2:
When BT19 or return water temp. <
T
ank defrost temp.
Operation control function by the indoor unit controller