Repair Procedures; Refrigerant Pressure Sensor; Checking Procedures - Daikin Altherma EBLQ011CAV3 Service Manual

Location
1,2‑3,4
5‑8
Is the measured reactor
resistance correct?
Yes
No
2.20.2

Repair procedures

To remove the reactor
Prerequisite: Turn OFF the unit via the user interface.
Prerequisite: Turn OFF the respective circuit breaker.
Prerequisite: Remove the required plate work, see
work" on page 77.
1 Open the compressor insulation.
2 Remove the cover of the compressor wire terminals.
a Compressor wire terminals cover
3 Disconnect the connector.
4 Remove the clip and remove the reactor from the compressor.
5 To install the reactor, see
page 79.
To install the reactor
1 Install the reactor in the correct location and install the clip.
2 Connect the reactor connector.
3 Install the cover of the compressor wire terminals.
a Compressor wire terminals cover
4 Install the compressor insulation.
Is the problem solved?
Yes
No
2.21

Refrigerant pressure sensor

2.21.1

Checking procedures

To perform an electrical check of the refrigerant
pressure sensor
Prerequisite: Turn OFF the unit via the user interface.
Prerequisite: Turn OFF the respective circuit breaker.
Prerequisite: Remove the required plate work, see
work" on page 77.
EBLQ+EDLQ011~016CAV3+W1 + EBLQ+EDLQ011~016CA3V3+W1
+ EK(2)CB07CAV3 + EKMBUHCA3V3+9W1
Daikin Altherma – Monobloc
ESIE18-04 – 2019.02
Resistance (Ω)
0.037 ± 20%
0.19 ± 20%
Action
Return to the troubleshooting of
the specific error and continue
with the next step.
Replace the reactor, see
"2.20.2 Repair procedures" on
page 79.
"2.19 Plate
"2.20.2 Repair procedures" on
Action
No further actions required.
Return to the troubleshooting of
the specific error and continue
with the next procedure.
"2.19 Plate
1 Connect a pressure gauge to the pressure service port. Read
the pressure.
2 Using the graphic below, determine the expected sensor output
voltage based on the pressure measured in the previous step.
51.0
45.9
40.8
35.7
30.6
25.5
a
20.4
15.3
10.2
5.1
0
-5.1
-0.5 0 0.5 1 1.5 2
b
a Detected pressure (kg/cm²)
b Output voltage (V)
V (DC)
0.5
0.6
0.7
0.8
0.9
1.0
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
1.9
2.0
2.1
2.2
2.3
2.4
2.5
2.6
2.7
2.8
2.9
3.0
3.1
3.2
3.3
2 Components
2.5 3 3.5 4
2
Detected pressure kg/cm
0.00
1.43
2.86
4.28
5.71
7.14
8.57
10.00
11.42
12.85
14.28
15.71
17.14
18.56
19.99
21.42
22.85
24.28
25.70
27.13
28.56
29.99
31.42
32.84
34.27
35.70
37.13
38.56
39.98
Service manual
79