How to Handle Request for Maintenance
Si-71A
80
Troubleshooting
2.
How to Handle Request for Maintenance
2.1
Flow Chart
Find out the situation according to the following procedure when there is a request for service from the
customer.
YES
NO
NO
NO
NO
NO
Cooling
Heating
NO
NO
YES
YES
YES
Runs
Runs
Nomal
Nomal
Doesn't run
YES
YES
YES
NO
YES
(Maintenance required)
OK.We'll be right over.
(SF004)
Ask for the character
code of the malfunction
code.
Turn the power supply
switch ON or replace
the fuse.
Wait until
power failure
is over.
Is there a
power
failure?
Doesn't run at all
The power supply switch is
OFF or the switch's fuse is
burnt.
Set the remote
controller's temperature
setting to:
(1)When
cooling:Minimum
(2)When
heating:Maximum
The fan comes on
but the
compressor
doesn't run.
Cooling starts but
stops right away.
Is the remote
controller's operation
lamp blinking?
Is the remote
controller's operation
lamp blinking?
Machines equipped with
wireless remote
controllers only.
Is the operation lamp of the
indoor unit's signal receiving
section blinking?
Is the operation lamp of the
indoor unit's signal receiving
section blinking?
Ask for the character
code of the malfunction
code.
Ask for the character
code of the malfunction
code.
Refer to "Remote controller display
malfunction code and contents".
Units equipped with liquid
crystal remote controllers only
Units equipped with wireless
remote controllers only
Is the remote
controller's operation
lamp blinking?
Try turning the
Operation switch OFF
and On.
The unit won't run
again for a while
after stopping.
The unit runs but
doesn't cool the
room.
Is the operation lamp of
the indoor unit's signal
receiving section
blinking?
Measure the suction
/disharge temperature.
Units equipped with liquid
crystal remote controllers only
Units equipped with wireless
remote controllers only
Did you allow 3 minutes to
elapse after turning ON?
Is there something causing the
indoor load to be large, such as
an open window or door?
(Temperature differential
=suction temperature - discharge temperature)
Units equipped with liquid
crystal remote controllers only
Operation is
normal.
Temperature
differential is 8~18˚C
The units runs but
doesn't heat the
room.
Measure the suction
/discharge temperature.
Is there something causing the
indoor heat load to be large, such
as an open window or door?
(Temperature differential
=discharge temperature - suction temperature)
Operation is
normal.
Temperature
differential is 14~30˚C
(1) The operation circuit fuse is
disconnected or is making poor contact.
(2) The operation swich is broken or its
contact is defective.
(3) The high pressure switch is broken.
(4) The fan motor's magnetic switch is
broken.
(5) The fan motor's overcurrent relay is
being actuated or is broken.
(6) The compressor's overcurrent relay is
broken.
(7) The compressor's protective thermostat
is broken.
(8) The electrical system insulation is
defective.
(9) The compressor's magnetic switch's
contact is defective.
(10) The compressor is broken.
(11) Thermostat is broken.
(12) The cool/heat selector is broken.
(13) The operation switch is broken.
(14) The compressor's magnetic swich is
broken.
(15) Over-charged with refrigerant.
(16) Air is mixed inside the refrigerant
circuit.
(17) The pressure switch is broken.
(18) The outdoor unit fan motor's magnetic
switch is broken.
(19) The outdoor unit fan motor's auxiliary
relay is broken.
(20) The outdoor unit's heat exchanger is
dirty.
(21) There is something blocking the
outdoor unit's air flow.
(22) Malfunction of the outdoor unit's fan.
(23) The indoor unit's air filter is dirty.
(24) The indoor unit's heat exhanger is
dirty.
(25) There is something blocking the indoor
unit's air flow.
(26) Malfunction of the indoor unit's fan.
(27) Overcurrent relay (for compressor)
(28) Compressor's protective themostat
(29) The causes for the overcurrent relay
(for compressor) being actuated are:
(29)-1 Power supply voltage is lower than
prescribed.
(29)-2 High pressure is too high.
(29)-3 The power supply cord is too small.
(29)-4 The compressor is broken.
(30) The causes for the compressor's
protective thermostat
(30)-1 Internal leak of the-4way valve
(No substantial difference between
suction and discharge temperature.
(30)-2 Unsatisfactory compression from
the compressor
(30)-3 Defective refrigerant
(30)-4 Malfunction of the expansion valve
(30)-5 Unsatisfactory refrigerant circulation
Summary of Contents for Skyair FHC35K
Page 7: ...Si 71A vi Table of Contents...
Page 19: ...Present Model s Functions Si 71A 8 Improved Points and Functions...
Page 22: ...Si 71A Wired Remote Controller Remote Controller Operation 11...
Page 24: ...Si 71A Wireless Remote Controller Remote Controller Operation 13...
Page 26: ...Si 71A Wireless Remote Controller Remote Controller Operation 15...
Page 27: ...Wireless Remote Controller Si 71A 16 Remote Controller Operation...
Page 42: ...Si 71A Settings Concerning Maintenance Explanation of Field Set 31 FHYC35 FHYC125KVE V1C...
Page 43: ...Settings Concerning Maintenance Si 71A 32 Explanation of Field Set FHB35 FHB60FJV1 FV1...
Page 44: ...Si 71A Settings Concerning Maintenance Explanation of Field Set 33 FHYB35 FHYB71F...
Page 45: ...Settings Concerning Maintenance Si 71A 34 Explanation of Field Set FHK35 FHK60FJV1 FV1...
Page 46: ...Si 71A Settings Concerning Maintenance Explanation of Field Set 35 FHYK35 FHYK71FJV1 FV1...
Page 47: ...Settings Concerning Maintenance Si 71A 36 Explanation of Field Set FAY71 FAY100FVE...
Page 48: ...Si 71A Settings Concerning Maintenance Explanation of Field Set 37 FAY71 FAY100FAVE...
Page 49: ...Settings Concerning Maintenance Si 71A 38 Explanation of Field Set FVY L...
Page 50: ...Si 71A Settings Concerning Maintenance Explanation of Field Set 39 FUY71 FUY125FJ...
Page 52: ...Si 71A Settings Concerning Maintenance Explanation of Field Set 41 RY140K...
Page 106: ...Si 71A Procedure of Self Diagnosis by Remote Controller Troubleshooting 95...
Page 135: ...Troubleshooting by Remote Controller Display LED Display Si 71A 124 Troubleshooting...
Page 201: ...For R Y 71K Si 71A 190 Removal Procedure...
Page 206: ...Si 71A Piping Diagrams Appendix 195 R140KY1 Twin System R140KTAL Twin System 3D000191 3D000222...
Page 214: ...Si 71A Wiring Diagram Appendix 203 2 Wiring Diagram 2 1 Indoor Unit FHC35KVE FHC50KVE FHC60KVE...
Page 215: ...Wiring Diagram Si 71A 204 Appendix FHK35FV1 FHK71FV1 DU427 5405...
Page 216: ...Si 71A Wiring Diagram Appendix 205 FHB35FV1 FHB60FV1 DU423 5175A...
Page 217: ...Wiring Diagram Si 71A 206 Appendix FH35FVE FH125FVE DU423 5172B...
Page 219: ...Wiring Diagram Si 71A 208 Appendix FHYK35FJV1 FHYK70FJV1 DU423 5174...
Page 220: ...Si 71A Wiring Diagram Appendix 209 FHYB35FV1 FHYB71FV1 DU423 5173A...
Page 221: ...Wiring Diagram Si 71A 210 Appendix FHYB100FV1 FHYB125FV1 DU428 5353A...
Page 222: ...Si 71A Wiring Diagram Appendix 211 FHY35FVE FHY125FVE DU423 5172B...
Page 223: ...Wiring Diagram Si 71A 212 Appendix FAY71F A VE FAY100F A VE DU427 5410D...
Page 224: ...Si 71A Wiring Diagram Appendix 213 FVY71FV1 FVY125FV1 DU427 5403...
Page 225: ...Wiring Diagram Si 71A 214 Appendix FUY71FJV1 FUY100FJV1 FUY125FJV1 3D013404A...
Page 226: ...Si 71A Wiring Diagram Appendix 215 FVY71LVE FVY100LVE FVY125LVE 3D013540A...
Page 227: ...Wiring Diagram Si 71A 216 Appendix 2 2 Outdoor Units 50Hz R35GV1 R50GV1 DW523 555 1A...
Page 228: ...Si 71A Wiring Diagram Appendix 217 R60GV1 R71KV1 DU427 5399C...
Page 229: ...Wiring Diagram Si 71A 218 Appendix R100KV1 R71KY1 DU428 5349E DU427 5401B...
Page 230: ...Si 71A Wiring Diagram Appendix 219 R100KY1 R125KY1 R140KY1 DU428 5351D...
Page 231: ...Wiring Diagram Si 71A 220 Appendix 2 3 Outdoor Units 60Hz R50GVAL R60GVAL 3D005750...
Page 232: ...Si 71A Wiring Diagram Appendix 221 R71KVAL R100KVAL 3D014723A 3D014724A...
Page 235: ...Wiring Diagram Si 71A 224 Appendix RY60GV1A RY71KV1...
Page 236: ...Si 71A Wiring Diagram Appendix 225 RY71KY1 RY100KY1 RY125KY1 DU427 5397B DU428 5347D...
Page 237: ...Wiring Diagram Si 71A 226 Appendix RY140KY1 RY140KTAL 3D000102A 3D000104A...
Page 241: ...Si 71A iv Index...