Operating Range; Phase Protector - Daikin UATQ60C Installation Manual

Ensure the operating temperature is within the allowable range, as stated in diagram below:
52
50
19
14
Indoor WB temperature (°C)
The unit with Scroll Compressor can only rotate in one direction. For this reason, a protective device (phase protector) is fitted
to prevent incorrect wiring of the electrical phases. When the three phases are not connected correctly, the phase protector
operates, and the unit will not start. This device is located in the control box of the outdoor unit.
The following table shows the LED indicator light for phase protector under normal operation and fault conditions.
Model: UATQ60/90C
LED
Description
Normal operation
Reverse phase
T phase missing
S phase missing
R phase missing
High pressure
Low pressure
Overheat
+
Sensor missing
ON
Model: UATQ120/150/180/210/240/300C
LED
Description (Red)
Normal operation
Reverse phase
T phase missing
S phase missing
R phase missing
S &T phase missing +
Overload +
Sensor missing +
ON
Notes: 1. "+" indicates additional functions for PP01 phase protector.
2. When R phase missing, no LED or buzzer will indicate the error, but relay 71 and relay 81 will cut off.

OPERATING RANGE

23
19

PHASE PROTECTOR

PW P_S P_T
(Red) (Yellow) (Yellow)
OFF
PW P_R P_S
(Yellow) (Yellow) (Yellow)
OFF
! WARNING
• Troubleshooting must be performed by qualified personnel.
The use of the air conditioner outside the
range of working temperature and humidity
can result in serious failure.
Switch off the unit. Check the 3 phase wiring.
Switch off the unit. Check the 3 phase wiring.
Switch off the unit. Check the 3 phase wiring.
Switch off the unit. Check the 3 phase wiring.
High discharge pressure. Check the refrigerant system.
Low suction pressure. Check the refrigerant system.
High discharge temperature. Check the refrigerant system.
Switch off the unit. Plug in sensor.
Fast Blink
P_T
Switch off the unit. Check the 3 phase wiring.
Switch off the unit. Check the 3 phase wiring.
Switch off the unit. Check the 3 phase wiring.
Switch off the unit. Check the 3 phase wiring.
Switch off the unit. Check the 3 phase wiring.
High discharge temperature. Check the refrigerant system.
Switch off the unit. Plug in sensor.
Fast Blink
15
! CAUTION
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