Kamstrup MAXICAL III, User Manual

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MAXICAL ® III
5511-229 GB/98.06/Rev. B1
54
14. Service
14.1 Trouble Shooting
Symptom Possible Cause Suggested Remedy
No function displayed when Internal battery supply missing Replace Lithium back-up cell
supply cut-off
(blank display) (Spare part no. 1606-047)
Background lighting off Voltage supply cut-off Check mains supply
Displayed temp. too high 4-wire circuit out of order Check mains supply
No energy accumulation Read “info” on display Check both flow meter and
(e.g. MWh) and m 3 If “info” = 000 temperature sensors
If “info” > 000 Check fault indicated by info
code
Accumulation of m 3 , but not Flow and return sensors switched Fit sensors correctly
energy (e.g. MWh) over, either in installation or (t
F
must be higher than t
R
)
connection
No accumulation of m 3 No volume pulses Check flow meter connection
Check flow meter direction
Check flow meter setting
(read chapter 4.6)
Incorrect accumulation of m 3 Flow meter faulty Send meter to repair
Flow meter installed wrong way Re-install correctly
Incorrect programming Reprogram MAXICAL ® III or
send to Kamstrup for checking
Check flow meter setting
Incorrect temperature display Faulty temperature sensor Replace sensor pair
Poor cable joints Check joints
Temperature display a little too low/ Poor thermal sensor switch Place sensors in the bottom of
accumulated energy a little too low sensor pockets
(e.g. MWh)
Heat loss Insulate sensor pocket
Sensor pocket too short Replace with longer pocket
Analogue outputs give insufficient current Voltage supply too low Supply should be >210VAC
Excessive load R
LOAD
< 500
W
Outputs scaled incorrectly Reprogram MAXICAL ® III