3 | Components
Service manual
272
EBLA09~16DA + EDLA09~16DA
Daikin Altherma 3 M
ESIE20-06A – 2021.03
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.
3.23 Water pressure sensor
3.23.1 Checking procedures
To perform an electrical check of the water pressure sensor
Prerequisite: Stop the unit operation via the user interface.
Prerequisite: Turn OFF the respective circuit breaker.
Prerequisite: Remove the required plate work, see "3.17Plate work"[4230].
1 Turn ON the power of the unit.
2 Read the water pressure on the home screen of the user interface.
Result: The pressure MUST be 1~2bar.
3 Using the graphic below, determine the expected sensor output voltage based
on the measured pressure.
0 0.5
0
1
2
3
4
1 2 3 3.5 4 5
a
b
a Pressure (bar)
b Output voltage (V)
VDC Detected pressure (bar)
0.5 0.00
0.6 0.13
0.7 0.26
0.8 0.40
0.9 0.53
1.0 0.66
1.1 0.80
1.2 0.93
1.3 1.06
1.4 1.20
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