Repair Procedures - Daikin RXTA30B2V1B Service Manual

4.3.2 Repair procedures

To remove the compressor thermal protector
RXTM-R+RXTP-R+ARXTP-R+RXTA-B+FTXTA30B2V1B(W)
(B)+FTXTM30+40R2V1B+FTXTP25+35M5V1B+ATXTP25+35M5V1B
R32 Optimized Heating 4 Split
ESIE21-12A – 2022.02
b
a
a Compressor thermal protector
b Faston connector
c Bracket
3 If in doubt, measure the temperature of the compressor thermal protection.
Result: The temperature MUST be below 85°C.
4 Disconnect the Faston connectors from the compressor thermal protection.
INFORMATION
Make sure that the wiring between the compressor thermal protector and the
connector on the PCB is properly connected and NOT damaged (check continuity),
see "7.2 Wiring
5 Using a hot air gun, carefully heat the compressor thermal protection to
slightly above 123°C (compressor thermal protection trips at 117~123°C).
6 Measure the resistance on the compressor thermal protector.
Result: The contact MUST be open (measured resistance = OL).
7 Let the compressor thermal protection cool down below 85°C (reset
temperature is 85~105°C).
8 Again measure the resistance on the compressor thermal protector.
Result: The contact MUST be closed (measured resistance = 0 Ω).
Does the compressor thermal protector
contact open and close at the correct
temperature?
Yes
No
Prerequisite: Stop the unit operation via the user interface.
Prerequisite: Turn OFF the respective circuit breaker.
c
4
diagram" [ 232].
Action
Return to the troubleshooting of the
specific error and continue with the
next procedure.
Replace the compressor thermal
protector, see
procedures" [
4 Components
|
"4.3.2 Repair
4 69].
Service manual
69