Daikin RMXS-L Series User Manual

SiUS181631EA Troubleshooting for Outdoor Unit
Troubleshooting 237
7.9 Outdoor Temperature Thermistor (R1T) Abnormality
Error Code
H9
Method of Error
Detection
The temperature detected by the outdoor temperature thermistor determines the error.
Error Decision
Conditions
When the outdoor temperature thermistor has short circuit or open circuit
Supposed
Causes

Disconnection of thermistor

Defective outdoor temperature thermistor (R1T)

Defective main PCB (A1P)
Troubleshooting
Refer to Thermistor Resistance/Temperature Characteristics table 1 on page 267.
Is the
thermistor
connected to X11A on
the main PCB
(A1P)?
Is the resistance
normal when measured
after disconnecting the
thermistor (R1T)?
(3.5 kΩ ~ 360 kΩ)
Replace the main PCB
(A1P).
(R15642)
Connect the thermistor and
turn on again.
NO
Replace the outdoor
temperature thermistor
(R1T).
NO
YES
YES
Caution
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.

Daikin RMXS-L Series Specifications

General

Brand	Daikin
Model	RMXS-L Series
Category	Heat Pump
Language	English