Uponor c56

Problem Indication Causes Solutions
Disturbing noise from
pump at same time and
day of week
Change time for pump test exercise
Short circuit Short circuit alarm on Interface
I-75/76
Power LED and associated channel
LED fl ash
Short circuit on a connected
actuator
Short circuit on the actuator
terminal
Contact installer
Check wiring of actuators; replace the
actuator
No communication Communication error
Software versions incompatible
Wire disconnected or
damaged
Contact the installer
Check wiring of Interface I-75/76 and
Controller C-55/56
Replace the wire
Communication failure
between controllers
Communication error
Controller 3 disappears
Wrong wiring of several
controllers, wrong
numbering of the controllers
(1, 2 or 3, a number
assigned twice), wire
disconnected or damaged
Contact installer
Check wiring of Interface I-75/76 and
Controller C-55/56
Check Controller C-55/56
confi guration
Replace wire
Frozen display in
Interface I-75/76
No response when pressing key General failure Set time and date; all other
parameters are saved
Reset Interface I-75/76
11.1 Thermostat with display T-75 alarms/problems
An alarm is sent when more than 3 hours have elapsed since the controller received the last radio signal from the thermostat.
The table below shows problems that can occur in the Uponor Thermostat with display T-75.
Indication Causes Solutions
Battery icon displayed Thermostat battery power is running low
Replace batteries
Display is off
Batteries discharged or wrong type of battery used
Batteries installed upside down (reverse polarity) Install batteries correctly
Radio transmission icon is
displayed but signals are received
only when thermostat is close to
antenna
Transmitter working with reduced signal intensity Force thermostat to transmit by
changing temperature set point
Replace thermostat
New installations in building shield radio signals (for
example, metal door safe)
Try to fi nd new position for thermostat
and/or antenna, or, if possible, shielding
object
No radio transmission icon
displayed on thermostat screen
when +/- keys are pressed
Transmitter broken in thermostat Force thermostat to transmit by
changing temperature set point
Replace thermostat
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UPONOR CONTROL SYSTEM – INSTALLATION AND OPERATION MANUAL
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