![background image](http://html1.mh-extra.com/html/daikin/fhq100buv1b-x-2/fhq100buv1b-x-2_service-manual_2459261205.webp)
Troubleshooting by Remote Controller Display / LED Display
SiBE28-804
194
Troubleshooting
5.26 “
H9
”, “
J3
”, “
J5
”, “
J6
”, “
J7
”, “
J8
” Malfunction of Thermistor
System
Remote
Controller
Display
H9, J3, J5, J6, J7, J8
Applicable
Models
RZQ(S)71~140
Method of
Malfunction
Detection
Abnormality is detected according to the temperature detected by each individual thermistor.
Malfunction
Decision
Conditions
When thermistor is disconnected or short-circuited during operation
Supposed
Causes
Faulty thermistor
Faulty connection of connector
Faulty outdoor unit PC board (control PC board)
Troubleshooting
* Refer to P228~229 for “Thermistor temperature/Resistance characteristics”.
YES
YES
NO
Check connectors for
connection.
Connect correctly.
Replace the thermistor.
Remove thermistor from
outdoor unit PC board,
then measure the
resistance using a tester.
H9 : Malfunction of outdoor temperature thermistor system
J3 : Malfunction of discharge pipe thermistor system
J5 : Malfunction of suction pipe thermistor system
J6 : Malfunction of heat exchange thermistor
J7 : Malfunction of subcooling heat exchanger thermistor
J8 : Malfunction of liquid thermistor
Normal?
Normal?
NO
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Replace the outdoor PC board
(A1P).
Summary of Contents for FHQ100BUV1B x 2
Page 13: ...SiBE28 804 2 ...
Page 19: ...Model Name and Power Supply SiBE28 804 8 General Information ...
Page 29: ...Specifications SiBE28 804 18 Specifications ...
Page 33: ...Wired Remote Controller SiBE28 804 22 Remote Controller 1 2 Installation ...
Page 34: ...SiBE28 804 Wired Remote Controller Remote Controller 23 ...
Page 93: ...Outdoor Unit Fan Speed Control SiBE28 804 82 Functional Description ...
Page 131: ...Test Run and Operation Data SiBE28 804 120 Test Operation ...
Page 251: ...Troubleshooting by Remote Controller Display LED Display SiBE28 804 240 Troubleshooting ...
Page 277: ...PCB Layout SiBE28 804 266 Appendix ...
Page 297: ...RZQ100 140C7 RZQS125 140C7V1B SiBE28 804 286 Removal Procedure ...
Page 311: ...SiBE28 804 iv Index ...