Daikin EHYHBH05AAV3 Service Manual page 116

Error Codes: Outdoor Units
1
3
4
5
Caution
Part 4 – Troubleshooting
A
Actually, it is in wet operation.
Refer to Check 13,14,15
the causes of wet operation.
Restart operation.
Does the
malfunction code "E9"
recur?
NO
*1: Electronic expansion valve and connector No.
*2: Electronic expansion valve connector and
coil resistance criteria
(Orange) 1
(Red) 2
(Yellow) 3
(Black) 4
(Gray) 5
(White) 6
*3: For thermistor temperature and
resistance characteristics, see
Check 4,5 .
*4: For voltage characteristics of the
pressure sensor, see the right
figure.
P = 1.38V – 0.69
P : Detected pressure (MPa)
V : Output voltage
See also
"Check No.4 - Resistance Conversion Table (Ambient, Coil, Fin)" on page 153.
"Check No.5 - Resistance Conversion Table (Discharge Pipe Sensor)" on page 155.
"Check No.13 - Check for Inadequate Refrigerant" on page 161.
"Check No.14 - Check for Excessive Refrigerant Charging" on page 162.
"Check No.15 - Check for Factors Causing Wet Operation" on page 163.
Be sure to turn off power switch before connect or disconnect connector, or parts damage may be
occurred.
to eliminate
YES
X21A
Measurement spot Criteria
1 - 5 40 ~ 50
2 - 5 40 ~ 50
3 - 5 40 ~ 50
4 - 5 40 ~ 50
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
–0.5
–0.5 0 0.5 1
Output voltage V
116
ESIE13-02A
* Replace the outdoor PC board
(A1P) ERHQ***V3* / ERLQ***V3*
* Replace the control PC board
(A1P) ERHQ***W1* / ERLQ***W1*
It is believed that factors
(noise, etc.,) other than failure
caused the malfunction.
P
1.5 2 2.5 3 3.5
(V )
DC