Troubleshooting support

ES 5941Z

7.1

Error message

Error display

Error code

Description

Possible cause

110

TKW domestic cold water sensor/

heat exchanger inlet of fresh water

station is outside of the measuring

range.

Sensor short circuit/interruption.

112

TWZ circulation sensor is outside

the measuring range.

Sensor short circuit/interruption.

115

TWW domestic hot water sensor/

heat exchanger outlet of fresh

water station is outside of the

measuring range.

Sensor short circuit/interruption.

146

TU1 tank bottom sensor is outside

the measuring range.

Sensor short circuit/interruption.

147

TO1 tank top sensor is outside the

measuring range.

Sensor short circuit/interruption.

151

TPV flow sensor for plate heat

exchanger is outside the measuring

range.

Sensor short circuit/interruption.

159

FLOW flow sensor for the fresh

water sensor is outside the meas-

uring range (integrated in the direct

sensor).

Sensor short circuit/interruption.

172

TPR return sensor for the plate heat

exchanger is outside the measuring

range.

Sensor short circuit/interruption.

252

Flow rate counter is at zero despite

the circulation pump being active.

Faulty flow rate sensor or faulty cir-

culation pump.

03/2024 Item no. 215790 EA no. 1321

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