Daikin GQI-Eco Series, Service Manual

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ESIE15-13B Troubleshooting by LED Indications
Service Diagnosis 117
3. Troubleshooting by LED Indications
3.1 Troubleshooting by LED on the Indoor Unit
Foreword
Troubleshooting can be carried out by service monitor LED (green). (Blinks when normal)
k : LED on / h : LED off / l : LED blinks
Note:
1. When the INSPECTION/TEST button of remote controller is pushed,
INSPECTION
display blinks entering
INSPECTION
mode.
2. In the
INSPECTION
mode, when the ON/OFF button is pushed and held for 5 seconds or more, the
aforementioned error history display is OFF. In this case, after the error code blinks 2 times, the code
display turns to “00” (=Normal) and the unit No. turns to “0”. The INSPECTION mode automatically
switches to the normal mode (set temperature display).
3. Operation halts due to error depending on the model or condition.
4. Troubleshoot by turning OFF the power supply for a minimum of 5 seconds, turning it back ON, and then
rechecking the LED display.
3.2 Troubleshooting by LED on Outdoor Unit PCB
The following diagnosis can be conducted by turning ON the power switch and checking the LED indication
on PCB (A1P) of the outdoor unit.
k
: LED on /
h
: LED off /
l
: LED blinks
Note:
1. Turn OFF the power supply, and turn it ON again after 5 seconds or more. Check the error condition, and
diagnose the problem.
2. Turn OFF the power supply. After 5 seconds or more, disconnect the connection wire (2). Then turn ON
the power supply. If the HAP on the outdoor unit PCB flashes after about 10 seconds, the indoor unit PCB
is faulty.
3. Also check for open phase.
Remark:
The error detection monitor continues to indication the previously generated error until the power supply is
turned OFF.
Be sure to turn OFF the power supply after inspection.
Micro-computer
Normal Monitor
Contents/Processing
HAP (LED-A)
l Indoor unit normal  Outdoor unit troubleshooting
l Incorrect transmission wiring between indoor and outdoor unit
If outdoor unit’s LED-A is OFF, proceed outdoor unit’s troubleshooting. If outdoor unit’s
LED-A blinks, defective wiring or indoor or outdoor unit PCB assy.
k Defective indoor unit PCB assy
h Defective power supply or defective PCB assy or broken transmission wire between indoor
and outdoor unit.
LED detection
Description HAP H1P
(Green) (Red)
l h Normal
k — Defective outdoor unit PCB (Note 1)
h — Power supply abnormality, or defective outdoor unit PCB (Note 2)
l k Activation of protection device (Note 3)