Daikin LXE10E-A Service Manual page 151

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Symptom
The control
temperature is
unstable
Faulty low pressure
transducer LPT
Faulty discharge pipe
temperature sensor DCHS
Faulty opening of
suction modulating
valve SMV
Faulty contact of
solenoid valve (BSV)
Cause
Operating temperature
Is the difference in
pressure between the
pressure gauge and
LPT 30 kPa or more?
Is the DCHS or heat
insulator installed
inappropriately?
The SMV opening is
fixed to approx. 24%
Check the BSV
connector or lead wire
6-9
Checkpoint
is hunting
YES
NO
YES
NO
YES
NO
※ BSV: Discharge gas bypass solenoid valve
Remedy
Replace the LPT
Correct installation of DCHS
Reset the opening of SMV
(Circuit breaker ON)