Kamstrup MULTICAL 403 - 16 Troubleshooting

MULTICAL® 403
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Kamstrup A/S · Technical description · FILE100000166_B_EN-55121689_M1_07.2023
16 Troubleshooting
MULTICAL

403 has been constructed with a view to quick and simple installation as well as long and reliable
operation at the heat consumer.
Should you, however, experience an operating problem, the table below can be used for troubleshooting.
Should it be necessary to repair the meter, we recommend only to replace battery, temperature sensors and
communication modules. Alternatively, the whole meter should be replaced.
Major repairs must be made by Kamstrup A/S.
Before sending us a meter to be repaired or checked, please use the error detection table below to help you clarify
the possible cause of the problem.
Symptom
Possible reason
Proposal for correction
No display function (empty display)
Power supply missing
Change battery or check mains
supply. Does the supply plug
provide 3.6 VDC?
No energy accumulation (e.g.
MWh) and volume (m
3
)
Read “INFO” in the display
Check the error indicated by the
info code (See paragraph 7.7)
If “INFO” = 00000000
Check that the flow direction
matches the arrow on the flow
sensor
If “INFO” = xXxxxxxx, xxXxxxxx or
xXXxxxxx.
Consult the ”INFO” overview
(paragraph 7.7) and check the
temperature sensors. If
defective, replace the sensor set.
Accumulation of volume (m
3
) but
not of energy (e.g. MWh)
Inlet and outlet sensors have been
interchanged in either installation
or connection
Mount the sensors correctly
Heat/cooling cut-off
θ
hc
has been
configured at too low value
Reconfigure
θ
hc
at a suitable
value, or configure θ
hc
at 250 °C,
thereby disconnecting the cut-off
function.
Incorrect temperature reading
Defective temperature sensor
Insufficient installation
Replace sensor set
Check the installation
Temperature indication a little too
low, or accumulation of energy (e.g.
MWh) slightly too low
Bad thermic sensor contact
Heat dissipation
Too short sensor pockets
Make sure that the sensors are
pushed to the bottom of the
sensor pockets
Insulate sensor pockets
Replace by longer pockets