Daikin FHYB45FV1 [122/244] Malfunction of electronic expansion valve

Daikin FVY100LVE [122/244] Malfunction of electronic expansion valve
Si-71A Troubleshooting by Remote Controller Display / LED Display
Troubleshooting 111
6.13 Malfunction of Electronic Expansion Valve
Remote Controller
Display
(<
(<(<
(<
Outdoor Unit LED
Display
A(H1P) —
ýýý
1(H2P) — 2(H3P) —
Applicable Models
R(Y)
Method of
Malfunction
Detection
With electronic expansion valve malfunction detection, coil current is detected and open and short circuits
are detected.
Malfunction
Decision
Conditions
Malfunction is determined by the following condition.
Coil current: open circuit < normal < short circuit
Supposed Causes
Failure of electronic expansion valve
Electronic expansion valve’s harness is broken or disconnected.
Failure of electronic expansion valve’s connector connection
Failure of outdoor unit PC board
Outside cause (noise, etc.)
Troubleshooting
Is
resistance
of electronic
expansion valve's
coil normal?
(40-50)
YES
YES
Normal reset?
NO
NO
Turn the power
supply off once and
then back on.
Could be outside cause (noise, etc.)
other than malfunction.
Failure of electronic expansion valve
Outdor unit PC board replacement
(SF015)

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