Maintenance Guidelines
1. Matters
Need
Attention
1) Preparation before Repair
Step 1: Confirm the unit model which needs repair and check the model and material code of the part which is
easy to damage, especially the controller of outdoor unit.
Step 2: Preliminarily determine the part which should be replaced according to malfunction description from the
customer. Take the determined parts for repair at site.
Step 3: In addition to screwdriver, spanner etc. for daily maintenance which shall be taken, multimeter and
amperemeter are also needed.
2) During repair, never touch any terminal if voltage between P and N of power module is lower than 36V,
to avoid electric shock.
3) After repair, check power socket, terminal boards of indoor unit and outdoor unit, plug-in parts
(especially on outdoor unit mainboard, power module and PFC module) for loosening.
Power cord
Electronic expansion
valve
5-core connection
line with drive board
Temperature sensor
Signal line for
compressor over
load protection
4-way valve
connection line
PFC power cord
Socket of outdoor
fan
Ground wire
Live wire
Neutral wire
Communication
line
29
Fig.1 Outdoor Unit Mainboard
Outdoor unit main
board connection
line
PFC induction line
PFC module
Outdoor unit main
board 5-core line
PFC control line
DC positive pole
Compressor line(3)
DC negative pole
Power module
Summary of Contents for V1RFI-30
Page 1: ......
Page 8: ...Outline and installation dimensions of outdoor unit Unit mm Bolt Nut Wrench V1RF0 30 ...
Page 9: ...Unit mm Bolt Nut Wrench V1RF0 50 ...
Page 20: ...Exploded View of Components and Parts of outdoor unit 20 V1RF0 30 ...
Page 22: ...Exploded View of Components and Parts of Indoor unit 22 V1RFI 50 ...
Page 24: ...Exploded View of Components and Parts of outdoor unit 24 V1RFI 50 ...
Page 36: ......