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Installation guide

Errors are encoded by a 4-digit code.

Code

Status of calculator

Status of the return heat carri-

er temperature sensor (T2)

Status of the supply heat car-

rier temperature sensor (T1)

Status of flow sensor

* - only in case of these serious errors will be stopped the summation of energy and normal working time, the

error code will be displayed on the LCD first page, additionally the error date will be displayed.

Error codes sum up if there are more than one error. Then the summary indicated error code will be as

follows:

• 3 – corresponds to error codes 2 + 1

• 5 – corresponds to error codes 4 + 1

• 7 – corresponds to error codes 4 + 2 + 1

• 9 – corresponds to error codes 8 + 1

• A – corresponds to error codes 8 + 2

• B – corresponds to error codes 8 + 2 + 1

• C – corresponds to error codes 8 + 4

• D – corresponds to error codes 8 + 4 + 1

• E – corresponds to error codes 8 + 4 + 2

• F – corresponds to error codes 8 + 4 + 2 + 1

If at least one digit value of an error code is ≥8, the summing-up of energy, water quantity, and trouble-free

operation time is stopped.

In case of the flow sensor error 4, the time "when the flow q> 1.2∙q

12 | © Danfoss | Energy Meters | 2021.10

SonoMeter 40

Description

0 - normal operation

1 - battery service life has expired (or the meter was not power supplied –

if it is externally power supplied)

2 - temperature differential is higher than permissible limits

4 - temperature differential is lower than permissible limits

8 - electronic unit hardware failure *

0 - normal operation

4 - the sensor is short-circuited *

8 - the sensor is disconnected or short-circuited *

0 - normal operation

4 - the sensor is short-circuited *

8 - the sensor is disconnected or short-circuited *

0 - normal operation

1 – no signal; the flow sensor is not filled with water

2 – reverse flow

4 – the flow is greater than 1.2∙q

8 – hardware failure *

(indicated q=1.2∙q

)

" is recorded additionally.

AN384648824392en-010102