TAC 2112, Manual Troubleshooting
TAC AB, 1999-08-01 0-004-7459-3 (GB), 6:1(2)
6 Troubleshooting
The TAC 2112 is usually a very reliable controller. If problems occur
in spite of this, you can use the troubleshooting advice given below. If
you require further assistance, please contact your nearest TAC
service point.
Problem Check that ...
The display window is blank • the controller has power
Room temperature too low • the heat supply (district heating or
boiler) is at the correct temperature
• the shunt valve is not stuck or
seizes
• the actuator is moving as it should
• the circulation pump is running
• the operating mode is set to “timed
operation” or “fixed daytime
operation” (see chapter 7)
• night setback is not switched on
• the holiday program is not
switched on
• the temperatures are reasonable
• the room temperature or supply
temperature are set correctly
Room temperature too high
• the shunt valve is not stuck or
seizes
• the actuator moves as it should
• the temperatures are reasonable
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