Abnormal Discharge Pipe Temperature - Daikin VRV-WIII RWEYQ72PTJU Service Manual

Troubleshooting by Indication on the Remote Controller

3.23 Abnormal Discharge Pipe Temperature

F3
Error Code
Applicable RWEYQ72P, 84P
Models
Method of Error
Abnormality is detected according to the temperature detected by the discharge pipe temperature
Detection thermistor.
Error Decision
When the discharge pipe temperature rises to an abnormally high level (275 °F or more)
When the discharge pipe temperature rises suddenly (248 °F or more for 10 successive minutes)
Conditions
 Defective discharge pipe temperature thermistor
Supposed
 Defective connection of discharge pipe temperature thermistor
Causes
 Defective condensing unit PCB
Troubleshooting
1. Compare the resistance value of discharge pipe thermistor and the value based on the surface
Note:
CHECK 11
190
Be sure to turn off the power switch before connecting or disconnecting
Caution
connectors, or parts may be damaged.
Connect the service checker.
Press reset and start operation again.
Check if
discharge pipe
thermistor property is
normal.
(*1)
YES
Service Checker
Connect the service checker to compare the
temperature of discharge pipe by using service
checker with actual measurement value of discharge
pipe thermistor CHECK 11
Check
if
temperature of
discharge pipe by
using service checker is
the same with actual
measurement value of
discharge pipe
thermistor.
YES
· Discharge pipe thermistor is normal and the
temperature detection of the condensing unit main
PCB is also normal.
· Actually the temperature of discharge pipe is high.
CHECK 3 Remove the factor of overheat operation.
thermometer.
CHECK 3 Refer to P.243.
Refer to P.250.
NO
.
NO
SiUS30-1301
Replace the discharge pipe
thermistor.
Replace the condensing unit main
PCB (A1P).
Service Diagnosis