Procedure Of Self-Diagnosis By Led; Troubleshooting By Led On Outdoor Unit Pc Board - Daikin SkyAir RZQ200 · 250C7Y1B Service Manual

Procedure of Self-Diagnosis by LED

3. Procedure of Self-Diagnosis by LED

3.1

Troubleshooting by LED on Outdoor Unit PC Board

The following diagnosis can be conducted by turning on the power switch and checking the LED
indication on the printed circuit board of the outdoor unit.
4
Notes: 1. Turn off the power switch, and turn it on again after 5 seconds or more. Check the error
2. Turn off the power switch. After 5 seconds or more, disconnect the connection wire (3). Then
3. Also check for open phase.
Precautions during inverter servicing
1. Do not touch the energized part because of its high voltage for at least 10 minutes after the
2. After opening the switch box cover, measure the voltage between the terminals on the
3. For the purpose of preventing damage to PC board, never fail to touch the earth terminal of
4. Before starting operation, disconnect the relay connectors X1A and X2A from the motor for
5. After finishing servicing, plug the outdoor unit fan relay connector to the previous positions.
General precautions during servicing
Precautions during refrigerant refilling
(1) Use charge hoses and gauge manifolds designed for R-410A from the perspective of
(2) Be sure to blow nitrogen while brazing.
(3) Air tightness test must be conducted at 4.0 MPa.
(4) Be sure to vacuum and dry refrigerant and refrigerant charging must be carried out from the
Precautions when handling the outdoor PC board
Even when not energized, touch a grounded metal part with fingers before touching any part or
pattern in order to discharge electricity charged in your body.
98
3
: LED on : LED off
Microcomputer in
normal operation
HAP
(Green)
5
4
3
5
condition, and diagnose the problem.
turn on the power switch. If the HAP on the outdoor unit PC board flashes after about 10
seconds, the indoor unit PC board is faulty.
* The error detection monitor continues to indication the previously generated error until the
power switch is turned off.
Be sure to turn off the power switch after inspection.
power is turned OFF.
power terminal block with a tester to confirm that the power is turned OFF.
Take measurements at the following spots with a tester to confirm that the main circuit
capacitor voltage is 50 VDC or less.
the electrical equipment box with a hand immediately before plugging or unplugging the
connectors to release static electricity from your body.
the outdoor unit fan. Be careful not to touch the energized part when disconnecting the relay
connectors. (When the outdoor unit fan is rotated by strong wind or other reasons, electrical
energy is stored in the main circuit capacitor and there may be a risk of electric shock.)
Error code "E7" is displayed on the remote controller and normal operation is impossible.
For connecting the connectors, refer to the "Electrical Wiring Diagram" plate attached to the
back side of the switch box cover.
resistance to pressure and prevention of impurities (SUNISO oil, etc.) from entering.
When connecting the flare, apply ether or ester oil on the flare.
liquid side in the form of liquid.
5
: LED blinks — : Not used for diagnosis
Error detection
H2P
(Red)
3
Normal
Faulty outdoor unit PC board (Note 1)
—
Power supply abnormality, or faulty
—
outdoor unit PC board (Note 2)
4
Activation of protection device (Note 3)
Tester
SiBE26-701
Description
Troubleshooting