Trouble-Shooting - Watts Industries Climatic Control-H Manuel D'installation Et D'utilisation

9. TROUBLE-SHOOTING

X. TROUBLE
X.X Possible reason
1.
The display shows
at
1.1
13
Disconnected outside temperature sensor
at 5
1.2
Disconnected flow temperature sensor
2. Incorrect flow temperature
2.1 Too high flow temperature due to incorrectly con-
nected valve drive (reverse action)
2.2 Too low flow temperature due to incorrectly con-
nected valve drive (reverse action)
2.3 Incorrect selected operation mode
2.4 When Controller operating in AUTOMATIC mode:
- incorrect programming of built-in or user pro-
gram
- incorrect setting of time / day of the week
3. The pump or the valve drive does not work
3.1 Cable connections reversed.
3.2 Pump connected to temperature limiter.
PPLIMP2350Bb
Elimination
Check whether the connection of sensor cable is correct.
Check the cable for damages.
Replace the cable or the sensor, if necessary.
Check whether the connection of sensor cable is correct.
Check the cable for damages.
Replace the cable or the sensor, if necessary..
Check the connection of the valve drive ( 5.2).
Check the connection of the valve drive ( 5.2).
Select the correct mode of operation.
- Check the factory program or the user program settings
and pay attention to the correct setting of NORMAL and
REDUCED temperature periods of operation.
- Check the setting of the time / day of the week.
Check the electric connections ( 5.2).
- Check the electric connection ( 5.2).
- Check the maximum temperature setting of the TB.
- Check the ambient temperature of the TB. If necessary,
change its position.
- Check the TB operation. Replace it if necessary.
GB
page 36