Indoor Unit: Malfunction Of Moving Part Of Electronic Expansion Valve (Y1E); Electronic Expansion Valve (Y1E) - Daikin VRV K Manual

SI-95.BOOK Page 82 Friday, March 31, 2000 10:59 AM
Troubleshooting
2.6

Indoor Unit: Malfunction of Moving Part of Electronic Expansion Valve (Y1E)

A A A A 9 9 9 9
Remote Controller
Display
I Malfunction of moving part of electronic expansion valve
Supposed Causes
I Defect of indoor unit PC board
I Defect of connecting cable
Troubleshooting
∗1: Coil check method for the moving part of the electronic expansion valve
Disconnect electronic expansion valve from P.C.B, then check the continuity between connector pins and
judge.
(Normal)
1. White
2. Yellow
3. Orange
4. Blue
5. Red
6. Brown
8: Continuity
: No continuity
82
The electronic
NO
expansion valve is connected
to X7A of the indoor unit
PC board.
YES
Normal
when coil check (∗1) of
NO
the moving part of the electronic
expansion valve
is checked.
YES
The connecting
YES
cable is short-circuited or
disconnected.
NO
Pin No. 1. White 2. Yellow
After connecting, turn the power supply
off and then back on.
Replace the moving part of the
electronic expansion valve.
Replace the connecting cable.
If you turn the power supply off and
turn on again, and it still does not help,
replace the indoor unit PC board.
3. Orange 4. Blue 5. Red
8
Approx. 300Ω Approx. 150Ω
8
Approx. 300Ω
Approx. 150Ω
Troubleshooting Inverter K Series
Si-95
(VF033)
6. Brown
8
8
Approx. 150Ω
8
8
Approx. 150Ω