Mitsubishi City Multi PURY-P400 Service Handbook page 59

Code
Name Product code
(Function)
Solenoid
SV3~8 heat
vallve
exchanger
capacity
control
SV6a
discharge-
suction
bypass
Linear
SLEV (Oil re-
expansion
turn)
valve
Heater
CH11
CH12
crankcase
heater
CH2
CH3
Accumulator
liquid level
detection
4-way
21S4a
valve
21S4b
Application
Controls heat exchanger capacity of
outdoor unit.
Evaporation of liquid refrigerant inside
MC2.
Adjusts the rate of refrigerant (oil) re-
turning from the accumulator.
Refrigerant heating inside compressor.
Refrigerant heating of accumulator
liquid level detection circuit.
Switching of cooling/heating cycle.
–58–
Specification
AC 220 to 240 V
Close: conducting
Open : not conducting
AC 220 to 240 V
Open : conducting
Close: not conducting
DC 12 V stepping motor drive
valve opening amount 0 to
480 pulse (Direct drive type).
Belt heater AC 200 to 240 V
1280 Ω 45 W
MC1
MC2 400: 1280 Ω 45 W
500: 1029 Ω 56 W
Code heater 2880 Ω
(1440 Ω + 1440 Ω)
AC 220 to 240 V
20 W (10 W + 10 W)
AC 220 to 240 V
Not conducting: cooling cycle
Conducting : heating cycle
Inspection method
Conductivity test
using tester.
Same as indoor unit
LEV. However, the
resistance value is
different than the in-
door unit.
Resistance check
Resistance check
Conductivity check
using tester.