York HIDS006B21S - Page 129

(Main Parts)
MAINTENANCE
SM-18001-rev.1
4-55
Checking Method
Measure coil resistances between Red (common)
and each phase.
The measured resistance value is normal if apploximately 150
W
. *)
(*) Ambient Temperature 68
o
F (20
o
C))
●
Specications
Working Temperature
Range
-22
o
F to 158
o
F (-30
o
C to 70
o
C)
Refrigerant Used R410A
Insulation Resistance Min. 100M
W
(at 500VDC Megger)
Withstand Voltage 500VAC for 1 Minute or 600VAC for 1 Second
Rated Voltage
DC12V+1.2V
Drive Condition
100 - 200 PPS
2-2 Phase Excitation
Coil Resistance
150+15
W
(68
o
F (20
o
C))
Insulation Class Class E
Wiring Diagram,
Drive Circuit and
Activation Mode
φ3
φ1
White
Red (COM)
Orange
φ2 φ4
Yellow Blue
M
Phase 1 2 3 4
f
1 ON OFF OFF ON
f
2 ON ON OFF OFF
f
3 OFF ON ON OFF
f
4 OFF OFF ON ON
OPEN: 4 3 2 1 4
CLOSE: 1
2 3 4 1
Indoor Unit Electronic Expansion Valve
Locked
(Fully Closed)
Check for the liquid pipe temperature during heating operation.
It is abnormal if the temperature does not increase.
Locked
(Slightly Open)
It is abnormal under the following conditions. The temperature of freeze protection
thermistor becomes lower than the suction air temperature when the unit being
checked is stopped and the other units are in cooling operation.
Unit
Under
Checking
Electronic Expansion Valve
Freeze Protection
Thermistor
Other
Units
Locked
(Fully Open)
● Checking Method of Electronic Expansion Valve for Indoor Unit