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ultego® III perfect
Service loop 4 ("LOOP 4")
Service loop 4 shows the unit parameters. LCD button 2 calls the displays one after the other.
Previous year's values
The electronic unit stores the current meter readings for quantity of heat, volume, the tariff register, missing time, and flowrate
measuring time as well as the service life maxima for flowrate, power, temperature difference, flow temperature, and return
temperature with their date stamps on a yearly set day.
Monthly values
The electronic unit stores the meter readings for quantity of heat, volume, the tariff register, missing time, and flowrate
measuring time as well as the monthly maxima for flowrate, power, temperature difference, flow temperature and return tem-
perature with their date stamp for 18 months on the set day of each month.
The monthly values can also be read out via the optical and the 20 mA interface.
Error messages
The heat meter constantly performs self-diagnostics and can display various error messages.
Errorcode
F0
F1
F2
F3
F4
F5
F6
F7
F8
F9
Message F8 has to be reset in parameter setting mode (manually, PappaWin). All other error messages are cleared automati-
cally once the error has been corrected.
G.83.0101
ultego® III perfect
ista International GmbH – Grugaplatz 2 – D-45131 Essen
Head of the loop
Current tariff,
at 2s intervals with threshold value 1
Measuring interval for flowrate
Measuring interval for temperature
Module 1: M-bus module
M-bus primary address 1
M-bus secondary address 8-digit
Module 2: pulse module; chan. 1 = heat quantity
Channel 2 = volume, at 2s intervals
Significance for heat quantity pulses *)
Significance for volume pulses *)
Pulse duration in ms *)
*) for "fast pulses"
NOTE:
The standard time used is Central European Time (CET). If daylight-saving time is activated, storage
will be performed accordingly.
No flow;
Air in measuring unit / pipe, vent pipe
Interruption of flow sensor
Interruption of return sensor
Electronic for temperature evaluation defective
Battery empty; replace!
Short-circuit flow sensor
Short-circuit return sensor
Fault in the internal memory
F1, F2, F3, F5 or F6 pending for longer than 8 hours.
No more measurements are performed.
Error in the electronics
Error / action to be taken
6.1 - 230608
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