Daikin SkyAir Service Manual page 201

Troubleshooting by Remote Controller Display / LED Display
190
A
Actually, it is in wet operation.
Refer to Check 13,14,15
eliminate the causes of wet operation.
Restart operation.
Does
the malfunction
code "E9"
recur?
NO
∗1: Electronic expansion valve and connector No.
RZQ71~140C7, RZQS71~140C7 → X21A
∗2: Electronic expansion valve connector and
coil resistance criteria
(White) 1
(Yellow) 2 Measurement
spot
3
(Orange)
1 - 6
(Blue) 4 3 - 6
2 - 5
(Brown) 5
4 - 5
(Red) 6
COM (+) (Gray)
RZQ71C7V1B
RZQS71·100C7V1B
∗3: For thermistor temperature and
resistance characteristics, Refer
to Check 4,5 on P228~229.
∗4: For voltage characteristics of the
pressure sensor, see the right
figure.
P = 1.38V – 0.69
P : Detected pressure (MPa)
V : Output voltage
(P236~239) to
YES
(Orange) 1
(Red) 2
Criteria
3
(Yellow)
40 ~ 50Ω
40 ~ 50Ω (Black) 4
40 ~ 50Ω
(Gray) 5
40 ~ 50Ω
(White) 6
RZQ100~140C7V1B
RZQS125·140C7V1B
3.5
3.0
2.5
2.0
1.5
PH
(MPa)
1.0
0.5
0
–0.5
–0.5 0 0.5 1
Output voltage V (V
SiBE28-804
Replace the outdoor PC
board (A1P).
It is believed that factors
(noise, etc.,) other than failure
caused the malfunction.
Measurement
Criteria
spot
1 - 5 40 ~ 50Ω
2 - 5 40 ~ 50Ω
3 - 5 40 ~ 50Ω
4 - 5
40 ~ 50Ω
PH
1.5 2 2.5 3 3.5
)
DC
Troubleshooting