Troubleshooting After Installation; Digital Thermostats - Uponor Climate Control Zoning System II Installation And Operation Manual

Troubleshooting after installation

Problem
The system does not start
Poor radio reception
The thermostat is faulty
Table 9-2: Troubleshooting after installation

Digital thermostats

An alarm is sent when more than one hour has elapsed since the controller received the last radio signal from the thermostat. The
table below shows problems that can occur with digital thermostats.
Indication
Battery icon is displayed.
The display is off.
Radio transmission icon is displayed but
the signals are received only when the
thermostat is close to the antenna.
No radio transmission icon
on thermostat screen when –/+ buttons are
pressed.
Relative humidity icon is displayed.
The icon for floor temperature
sensor flashes.
The icon for outdoor temperature
sensor flashes.
The icon for indoor temperature
sensor flashes.
Table 9-3: Troubleshooting digital thermostats
32 | uponorpro.com
Indication
The power indicator in the controller
is off.
There is no 24 VAC power in the
wall socket.
Repeated radio alarms
Channel LEDs in the controller
continue flashing
Probable cause
Thermostat battery power is running low.
The batteries are discharged or wrong
type of batteries are used.
The batteries are installed upside down
(reverse polarity).
Transmitter working with reduced
signal intensity
New installations in building shield radio
signals (for example, metal door safe)
The transmitter broken in the thermostat.
is displayed
The relative humidity limit is reached.
Faulty temperature sensor
Faulty temperature sensor
Faulty temperature sensor
Probable cause
There is no AC power to the
controller.
Blown controller fuse or faulty
wiring
The antenna is installed inside
a metal cabinet, or too close to
other shielding objects.
Building structure is unfavorable
for radio transmission.
The antenna is not correctly
installed or positioned.
Solutions
Replace the batteries.
Replace the batteries.
Install the batteries correctly.
Force the thermostat to transmit by changing the
temperature setpoint.
Replace the thermostat.
Try to find a new position for the thermostat and/or
the antenna, or, if possible, move the shielding object.
Force the thermostat to transmit by changing the
temperature setpoint.
Replace the thermostat.
Lower the humidity level by increasing the ventilation
or temperature setpoint.
Check the connection of the floor sensor.
Disconnect the floor temperature sensor and
check it with an ohmmeter. The value must be around
10k ohms.
Check the connection of the outdoor sensor.
Disconnect the outdoor sensor and check it with an
ohmmeter. The value must be around 10k ohms.
Contact the installer or replace the thermostat.
Disconnect the remote temperature sensor
(if connected) and check it with an ohmmeter.
The value must be around 10k ohms.
Solutions
1. Check that the controller is
connected to AC power.
2. Check the wiring in the 24 VAC
compartment.
3. Check that there is 115 VAC power
to the transformer.
Replace the fuse and/or correct the
wiring issue.
Change the antenna location. If the
problem persists, contact the installer.
Check the wiring and the antenna
connection.