The table below shows problems and alarms that can occur with Uponor Smatrix Move/Move PLUS and describes solutions. A common
cause of a problem though may be due to wrongly installed loops or mixed up thermostats.
Alarms are indicated by a flashing display and error messages on the display.
Problem
Indication
Probable cause
Solutions
Fluctuating floor
temperature
Floor temperature is changing abnormally
between hot and cold in heating mode
Supply water temperature is too high
Check heat curve and mode setting
Check boiler or shunt
Reduce the setting for maximum supply
water temperature
Lower the temperature compensation
parameter (system parameter 10) in
small increments until the system stops
fluctuating. Wait 24 hours between each
increment change
Indoor temperature in reference room does
not match setpoint on thermostat
Heating fall back function is activated
due to lost communication with
thermostat
Check heat curve and mode setting
Check the connection of the room
thermostat
Check batteries in room thermostat
Reconnect if the connection is lost
Indoor temperature does not match
setpoint on thermostat
The thermostat is placed in direct
sunlight or close to other heating
sources
Check placement of the thermostat
according to installation instructions and
change location if needed
Indoor temperature
too cold
(or too warm in
cooling mode)
Press – or + buttons to display the
temperature setpoint on the thermostat
The thermostat setting is too low
Change the temperature setpoint
Use maximum and minimum settings to
protect the system from consequences of
unreasonable temperature settings
The temperature displayed on the
thermostat drops after the thermostat is
moved
The thermostat may be influenced by
an external heat source
Change location of the thermostat
Calculated setpoint displayed on controller
same as set maximum or minimum limits
Incorrect minimum/maximum
limitation
Change the minimum/maximum limitation
(system parameters 2 and 3)
The indoor temperature reaches the
setpoint slowly
The supply temperature compensation
parameter is set too low.
Raise the temperature compensation
parameter (system parameter 10) in
small increments until the system is quick
enough. Wait 24 hours between each
increment change
ECO mode icon displayed in the controller
display
ECO mode
Change ECO profile or assign another
profile
Holiday mode icon displayed in the
controller display
Holiday mode
Cancel holiday mode
Indoor temperature
too warm
(or too cold in
cooling mode)
Corresponding loop is warm even after a
long period without heat call
Actuator does not close
Contact installer
Check that actuator is correctly installed
Replace the actuator
The indoor temperature reaches the
setpoint slowly
The supply temperature compensation
parameter is set too low.
Raise the temperature compensation
parameter (system parameter 10) in
small increments until the system is quick
enough. Wait 24 hours between each
increment change
Floor is cold
Room temperature OK but floor is cold
No heat demand from underfloor
heating system
Room is heated by another heat
source
12 Troubleshooting
UK
CZ
DE
DK
EE
ES
FI
FR
HR
HU
IT
LT
LV
NL
NO
PL
PT
RO
RU
SE
SK
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U P O N O R S M AT R I X M O V E / M O V E P L U S · I N S TA L L AT I O N A N D O P E R AT I O N M A N U A L