Daikin 2MXM50M3V1B9 Installation Manual page 20

Wiring
1.
Safe handling of high voltage part
• Turn the circuit breaker off and wait for 10 minutes before servicing.
1-1. To prevent electrical shock
• Use tester to check that the voltage between '+' and '-' is 50V or less. (Refer to figure below for the locations to check.)
• The surface of the test points (+, -) may be covered with coating.
• Be sure to make firm contact between tester probes and test points.
DC
MULTIMETER (DC,
VOLTAGE RANGE)
S92 (WHITE) (GAS)
THERMISTOR LEAD WIRE
S91 (RED) (LIQUID)
THERMISTOR LEAD WIRE
WARNING
All circuitry including thermistor is subject to power supply voltage.
2.
Reconnecting after check
• When reconnecting, be sure to reconnect everything the same way as it was before.
TESTER PROBE
(-) (+)
13
S90 THERMISTOR
LEAD WIRE
DB1
DC
AC
-
+
S70 FAN
S99 HEATING
MOTOR
LOCK
LEAD WIRE
(RED)
(LIQUID)
THERMISTOR
LEAD WIRE
(S91)
COATING
PCB
LED A
S40 OL LEAD WIRE HIGH
PRESSURE SWITCH
S20 (WHITE) (ROOM A)
ELECTRONIC EXPANSION
VALVE COIL
S21 (RED) (ROOM B)
S80 (WHITE) FOUR
ELECTRONIC EXPANSION
WAY VALVE LEAD
VALVE COIL
WIRE
(WHITE) (GAS)
COMPRESSOR
THERMISTOR
LEAD WIRE
LEAD WIRE
REACTOR
(S92)
LEAD WIRE
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