Mitsubishi Electric PURY-100TMU, Service Handbook

Page: 80 / 121

–79–
Solenoid valves (SVA, SVB, SVC)
Coordination signals output from the board and solenoid valve operations.
Note 1 : (SVA, SVB, SVC)
SVA, SVB and SVC are turned on and off in accordance with operation mode.
Note 2 : (SVA, SVB, SVC)
Measure temperature of piping on either side of SVA
1
-
A
Measure temperature of piping on either side of SVB
1
-
B
4) BC controller transformer
Cooling Heating Stopped Defrosting
SVA ON OFF OFF OFF
SVB OFF ON OFF OFF
SVC ON OFF OFF OFF
Mode
Branch port
Normal Malfunction
CNTR(1)-(3) Approximately 90
Ω
Open or shorted
CN03(1)-(3) Approximately 1.7
Ω
* Disconnect the connector before measurement.
CNTR CN03
BC Controller control board
Red Blue Brown Brown
1 A
B