Daikin FTY25CVMA User Manual

Si01-406 Check
Service Diagnosis 115
5. Check
5.1 Fan Motor Connector Output Check
Check No.01 1. Check connector connection.
2. Check motor power supply voltage output (pins 4-7).
3. Check motor control voltage (pins 4-3).
4. Check rotation command voltage output (pins 4-2).
5. Check rotation pulse input (pins 4-1).
5.2 Four Way Valve Performance Check
Check No.5
7
6
5
4
3
2
1
Motor power supply voltage
Unused
Unused
P.0V (reference potential)
Motor control voltage (15 VDC)
Rotation command voltage (1~ 6 VDC)
Rotation pulse input
S1
(R3199)
Turn off the power and turn it on
again.
Start the heating-mode run.
Replace the outdoor unit
PCB.
Replace the four way valve
coil.
Replace the four way valve.
(R3047)
NO
∗ Four way valve coil
Cooling / dry : Continuity
Heating : No continuity
YES
YES
Four way valve
coil resistance at
3kΩ±0.5kΩ?
NO
S80 voltage
at DC 180-220 V with
compressor on?
(Fig. 1)
Disconnect the four way valve coil
from the connector and check the
continuity.
(Fig. 1)
Voltage at S80
DC180-220V
ON
Compressor
Time

Daikin FTY25CVMA Specifications

General

Cooling Capacity	2.5 kW
Heating Capacity	3.2 kW
Refrigerant	R32
Weight (Indoor Unit)	8 kg
Noise Level (Outdoor Unit)	48 dB(A)
Type	Split
Power Supply	220-240 V, 50 Hz