oventrop Regumaq X-25, Руководство по эксплуатации

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Troubleshooting “Regumaq X-25”
38
138112581-V01.10.2019
MALFUNCTION CAUSE REMEDY
The LED on the controller
flashes red.
An error code appears on the
display.
(
The error message is au-
tomatically reset once the
error has been resolved.)
E1
S1, Sensor storage cylinder supply
defective
Replace the sensor.
E2
S2, Sensor hot water temperature
defective
Replace the sensor.
E3
S3, Sensor cold water/circulation
defective
Replace the sensor.
E4 (LIN) pump error Replace the pump.
Water escaping or leakage outside
the heat exchanger.
Pressure increase in the storage
cylinder circuit (potable water en-
ters the storage cylinder circuit).
The safety valve in the storage
cylinder circuit opens.
Leakage from the heat exchanger due
to corrosion. This may be due to the
heat exchanger not being suitable for
the potable water quality.
Replace the heat exchanger. The
brazing material used for the new
heat exchanger has to match the po-
table water quality (see information
sheet “Important advice regarding
corrosion protection” in appendix).
The discharge capacity is too low
at the draw-off points.
The heat exchanger is severely calci-
fied. Decalcify the potable water side of
the heat exchanger.
The cold water pressure is too low
(wrongly set pressure reducer).
Check the setting of the pressure
reducer. Increase the pressure if
necessary.
9.2 Nominal resistances of the temperature sensors
°C Ω
Pt1000
-10 961
-5 980
0 1000
5 1019
10 1039
15 1058
20 1078
25 1097
30 1117
35 1136
40 1155
45 1175
50 1194
55 1213
60 1232
65 1252
70 1271
75 1290
80 1309
85 1328
90 1347
95 1366
100 1385
105 1404
110 1423
°C Ω
Pt1000
115 1442