40
warmhaus.com.tr
Check Error ALL05 ( Flow Sensor ) indicated on LCD sceen
Check the NTC Connector First.
Is the connector terminals female pins and male pins are bended OR
disconnected?
Is there continuity between the PCB and the NTC?
Replace PCB
Remove the Flow&Safety NTC from the CH Flow Pipe and disconnect the wires.
Check the resistance using a suitable multimeter connected across the thermis-
tor’s terminal pins.
At 25°C expect 10000 Ohms ( 10.300 - 9.700 )
At 60°C expect 2488 Ohms ( 2562 - 2413 )
At 80°C expect 1258 Ohms ( 1295 - 1220 )
Is the NTC resistance value correct?
Replace the Flow NTC if sensor pins
are damaged
OR
Replace the cable if the pin connector
damaged.
Check and replace wiring as necessary
Replace the Flow&Safety NTC with
new&orginal spare
NO
NO
NO
YES
YES
YES
YES
Flow NTC FAULT
T (°C)
R (Ohm)
0
32624
5
25381
10
19897
15
15711
20
12493
25
10000
30
8056
35
6530
40
5324
45
4365
50
3599
55
2982
60
2483
65
2079
70
1748
75
1476
80
1252
85
1066
90
912
95
782
100
674
4.7. FLOW NTC FAULT
Designation
Manufacturer
Type-model / Technical data
Release date
17.05.2018
Fault finding; Flow NTC Sensor
Warmhaus
Viwa 90-115-125-150
Rev. No:
0
Drw. No:
WH.17.727