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ESIE16-03B
|
Part 2. Troubleshooting
2.4. Component checklist
Page 50
22/08/16
|
Version 1.1
SA R32 Sky-Air RZAG-L
2.4.2.3. Electronic expansion valve
1. Switch off the Daikin unit via the user interface.
2. Switch off the Daikin unit with the field supplied circuit breaker.
3. Switch on the Daikin unit and listen to the expansion valve assembly, if the expansion valve body does not create a latching
sound, continue with the electrical check.
4. Switch off the Daikin unit via the user interface.
5. Switch off the Daikin unit with the field supplied circuit breaker.
6. Remove plate work when required (refer to
"Basic removal" on page 67
).
7. Remove the expansion valve coil from the expansion valve body.
8. Slide the magnet (tool part N° 9950038) over the expansion valve body and gently rotate the magnet to manually operate the
expansion valve body clockwise (closing) and counterclockwise (opening).
9. If it is not possible to open the expansion valve body with the magnet, the expansion valve body is blocked and the expansion
valve body must be replaced (refer to
"Replacing expansion valve body" on page 81
).
1. Switch off the Daikin unit via the user interface.
2. Switch off the Daikin unit with the field supplied circuit breaker.
3. Remove plate work when required (refer to
"Basic removal" on page 67
).
4. Check if the electrical connector of the expansion valve coil was correctly connected to the PCB, if not, connect the electrical
connector.
5. Disconnect the electrical connector of the expansion valve coil and check the continuity between below pins using a multi
meter. It should be ± the same value.
-
Connector pin 1-6: connected
-
Connector pin 2-6: connected
-
Connector pin 3-6: connected
-
Connector pin 4-6: connected
Technical specification
Description
The electronic expansion valve has a hermetically sealed body
with a slide-on stepping motor drive coil (480 pulses from fully
closed to fully open position).
The electronic expansion valve is used:
• To control the flow of refrigerant. Depending on location, the
trigger point is sub-cool or superheat.
• To stop the flow of refrigerant completely when closing (=
0 pulses).
Location
Piping diagram
Wiring diagram
Switch box
Component overview of unit
See
"Outdoor unit" on
page 117
.
See
"Outdoor unit" on
page 115
.
See
"Outdoor unit" on
page 122
.
See
"Outdoor unit" on page 119
.
Check procedure
Mechanical check
Electrical check
Содержание SA R32 Sky-Air RZAG-L
Страница 14: ...ESIE16 03B Part 1 Introduction 1 4 How to use Page 14 22 08 16 Version 1 1 SA R32 Sky Air RZAG L...
Страница 60: ...ESIE16 03B Part 2 Troubleshooting 2 5 Other capacity range Page 60 22 08 16 Version 1 1 SA R32 Sky Air RZAG L...
Страница 94: ...ESIE16 03B Part 3 Repair 3 3 Unit specific repair procedures Page 94 22 08 16 Version 1 1 SA R32 Sky Air RZAG L...
Страница 98: ...ESIE16 03B Part 5 Appendix Page 98 22 08 16 Version 1 1 SA R32 Sky Air RZAG L...