Daikin 2MXM40M3V1B Installation Manual page 17

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)
S70 FAN MOTOR LEAD WIRE
S80 (WHITE)
FOUR WAY VALVE 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
(-) (+)
English
DB1
DC
AC
-
+
S92 (RED) (LIQUID)
THERMISTOR LEAD WIRE
COATING
PCB
LED A
S90 THERMISTOR LEAD WIRE
S99 HEATING LOCK
S40 OL LEAD WIRE HIGH PRESSURE SWITCH
S20 (WHITE) (ROOM A)
ELECTRONIC EXPANSION VALVE COIL
S91 (WHITE)(GAS)
S21 (RED) (ROOM B)
THERMISTOR
ELECTRONIC EXPANSION VALVE COIL
LEAD WIRE
COMPRESSOR LEAD WIRE
REACTOR LEAD WIRE
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