Daikin Altherma EBLQ011CA3V3 - Repair Procedures; Refrigerant Pressure Sensor; Checking Procedures

2 Components
Service manual
79
EBLQ+EDLQ011~016CAV3+W1 + EBLQ+EDLQ011~016CA3V3+W1
+ EK(2)CB07CAV3 + EKMBUHCA3V3+9W1
Daikin Altherma – Monobloc
ESIE18-04 – 2019.02
Location Resistance (Ω)
1,2‑3,4 0.037 ± 20%
5‑8 0.19 ± 20%
Is the measured reactor
resistance correct?
Action
Yes Return to the troubleshooting of
the specific error and continue
with the next step.
No Replace the reactor, see
"2.20.2Repair procedures"on
page79.
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 "2.19 Plate
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 "2.20.2 Repair procedures" on
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? Action
Yes No further actions required.
No Return to the troubleshooting of
the specific error and continue
with the next procedure.
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 "2.19 Plate
work"on page77.
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.
-5.1
-0.5 0 0.5 1 1.5 2 2.5 3 3.5 4
0
5.1
10.2
15.3
20.4
25.5
30.6
35.7
40.8
45.9
51.0
a
b
a Detected pressure (kg/cm²)
b Output voltage (V)
V (DC) Detected pressure kg/cm
2
0.5 0.00
0.6 1.43
0.7 2.86
0.8 4.28
0.9 5.71
1.0 7.14
1.1 8.57
1.2 10.00
1.3 11.42
1.4 12.85
1.5 14.28
1.6 15.71
1.7 17.14
1.8 18.56
1.9 19.99
2.0 21.42
2.1 22.85
2.2 24.28
2.3 25.70
2.4 27.13
2.5 28.56
2.6 29.99
2.7 31.42
2.8 32.84
2.9 34.27
3.0 35.70
3.1 37.13
3.2 38.56
3.3 39.98