ESIE16-03B | Part 2. Troubleshooting 2.4. Component checklist
Page 48 22/08/16 | Version 1.1
SA R32 Sky-Air RZAG-L
5. Measure the voltage on 4-way valve connector: pin 1-3. If the measured voltage does not range 220-240 VAC during switching
/ 15 VAC after switching, unplug 4-way valve connector from PCB and measure the voltage directly on the PCB: pin 1-3 of
4-way valve connection.
- If the voltage, measured directly on the PCB does not range 220-240 VAC during switching / 15 VAC after switching,
replace main PCB.
- If the voltage, measured directly on the PCB does range 220-240 VAC during switching / 15 VAC after switching, replace
the 4-way valve coil (refer to "Replacing 4-way valve coil" on page 75).
6. Unplug 4-way valve connector from PCB and measure the resistance of the 4-way valve coil. If the measured resistance does
not range 1000 - 2000 Ω, replace the 4-way valve coil (refer to "Replacing 4-way valve coil" on page 75).
7. Switch on the Daikin unit, start cooling/defrost operation.
If the temperature after the plate type heat exchanger rises, the control of the 4-way valve is wrong. Replace main PCB.
1. Switch off Daikin unit via the user interface.
2. Switch off Daikin unit with the field supplied circuit breaker.
3. Slide a magnet over the front and the rear of the 4-way valve body and sense the attraction of the magnet to determine the
valve position.
4. If the magnet is attracted in positions A,A’ or B,B’, the 4-way valve is OK; if the magnet is attracted in positions C,C’ the 4-way
valve must be replaced (refer to "Replacing 4-way valve body" on page 73).
WARNING: RISK OF FIRE
When reconnecting a connector to the PCB, do not apply force, as this may damage the connector or connector pins of
the PCB.
WARNING: RISK OF FIRE
When reconnecting a connector to the PCB, do not apply force, as this may damage the connector or connector pins of
the PCB.
Determine the position of the 4-way valve
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