Daikin C-Series Spezifikationen PDF herunterladen (Seite 101)

Troubleshooting

Cooling / Heat pump Model

Seven Segments Faulty Indication

E1 Blinking Room air sensor contact loose/short

E2 Blinking Indoor coil sensor contact loose/short

E3 Blinking Outdoor coil sensor contact loose/short

E4 Blinking Compressor overload protection

E5 Blinking Gas leak

HEAT LED blinking Defrost mode (BRC51B only)

Phase Sequencer

The unit with Scroll Compressor only can rotate in one direction. For this reason, a protective device (phase

sequencer) is ﬁ tted to prevent incorrect wiring of the electrical phases. When the three phases are not

connected correctly, the phase sequencer 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 sequencer under normal operation and fault

conditions.

LED

Description

(Red)

P_R

(Yellow)

P_S

(Yellow)

P_T

(Yellow)

Actions

Normal Operation -

Reverse Phase Switch off the unit. Check the 3 phase wiring.

T Phase Missing Switch off the unit. Check the 3 phase wiring.

S Phase Missing Switch off the unit. Check the 3 phase wiring.

R Phase Missing Switch off the unit. Check the 3 phase wiring.

S & T Phase

Missing*

Switch off the unit. Check the 3 phase wiring.

Overload*

High discharge temperature.

Check refrigerant system.

Sensor Missing* Switch off the unit. Plug in sensor.

OFF

BLINK

Note:

1. “ * ” indicates additional function for PP01 phase sequencer.

2. When R phase missing, no LED or buzzer will indicate the error, but relay 71 (COMMON) and 81 (NO) will cut off.

3. The unit will check discharge sensor availability only during power up.

4. All errors can only recover through manually reset.

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