TemperZone UC7 Quick Reference
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TemperZone UC7 Quick Reference

TemperZone UC7 Quick Reference

Unit controller operation and fault diagnosis
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Index
Introduction & Features/Functions
Unit Models available with UC7
Controller options that can be connected
Inputs & Outputs
Typical and Simple Controller Connections
Troubleshooting
Fault Codes
Diagnosing and Troubleshooting Fault Codes
Dip Switch Settings Air to Air (Air Cooled)
Dip Switch Settings Variations for Hydronic (Water Cooled)
This is a Quick Reference document covering the features and functions of the UC7
along with connectivity details and fault diagnosis troubleshooting information.
For more detailed information regarding the UC7 functionality and settings refer the
documents available on our website www.temperzone.biz : -
Download UC7 Client Wiring April 2014
Download UC7 Operation & Installation - Air-to-Air March 2014
Download UC7 Operation & Installation - Hydronics March 2014
Download UC7 Modbus Communications January 2014
rd
Date; 3
November 2014
Issue; 2 (addition of DIP switch settings)
Unit Controller (UC7)
Quick Reference
Operation and Fault Diagnosis
(To be read in conjunction with label TZ.227)
 
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Summary of Contents for TemperZone UC7

  • Page 1 Dip Switch Settings Variations for Hydronic (Water Cooled) Page 14 This is a Quick Reference document covering the features and functions of the UC7 along with connectivity details and fault diagnosis troubleshooting information. For more detailed information regarding the UC7 functionality and settings refer the documents available on our website www.temperzone.biz : -...
  • Page 2 An air conditioning unit control device and system protection that responds to external temperature control signals to dictate unit operation. Introduced into temperzone air cooled and water sourced models from 2013, replacing the previous OUC4 & HWP Protection Board Controllers respectively. These are not an accessory.

  • Page 3: Controller Options

    This is only suitable for fixed speed compressor control and High/Medium/Low fan speed control - not variable speed. Only voltages of 12V or 24Vac can be utilised. The UC7 will not tolerate mains voltage being applied. TZT-100 Temperature Controller Can control variable capacity compressor (digital directly and inverter via a third party driver board).
  • Page 4 Inputs Available Terminals Power 230VAC L/N + Earth Conventional Thermostat/Controller: - (High/Med/Low/Common) Hi/Me/Lo/C1 (Compressor/Heat/Common) Comp/Heat/C2 Only voltages of 12V or 24Vac can be utilised. HP Switch In#1 LP Switch In#2 Analogue 0 – 10Vdc Not labelled Modbus/BMS RS485#1Slave B/A/Ground Modbus/BMS RS485#2 Master +12Vdc/B/A/Ground DRED D1/D2/D3/Sc Ground...

  • Page 5: Other Connections

    Conventional Temperature Controller E.g. SAT-2.1 24Vac Version or BMS with switched outputs Only voltages of 12V or 24Vac can be utilised - the UC7 will not tolerate mains voltage being applied. Connected using multiple wires for all functions, (High/Medium/Low Fan, Compressor and Heat functions), to a terminal strip on the unit.

  • Page 6: Troubleshooting

    With   c ommunicating   B MS:   R efer   t o   d ocument   • “Temperzone   U C7   m odbus   c ommunications”.   Check   C MC   o utput   s ignal:  ...

  • Page 7: Fault Codes

    Fault Codes Display Meaning Low pressure protection is active High pressure protection is active HI-t High temperature protection is active FROSt Indoor coil frost protection is active HI-SL High suction line temperature protection is active Lo-dSH Low discharge superheat protection active Hi-dSH High discharge superheat protection active Overload protection is active: “IN #2”...
  • Page 8 Diagnosing and Troubleshooting Fault Codes Display   Meaning   Possible   c ause   Possible   r emedy   LP   Low   p ressure   Lack   o f   r efrigerant   Check   f or   l eaks   a nd   r epair,   a pply   c orrect   protection  ...
  • Page 9 Display   Meaning   Possible   c ause   Possible   r emedy   FROSt   Indoor   c oil   f rost   Air   f ilter   b locked   Clean   o r   r eplace   a ir   f ilter   protection  ...
  • Page 10 Display   Meaning   Possible   c ause   Possible   r emedy   OL   Overload   Indoor   f an   i s   o verloaded   Check   i ndoor   f an.   C heck   a irflow   i s   n ot   protection  ...
  • Page 11 Remove   m ains   p ower,   e nsure   DIP   s witches   humidity   UC7   c ircuit   b oard   i s   t horoughly   dry,   r e-­‐apply   p ower   F27  ...
  • Page 12 Display   Fault   Possible   c ause   Possible   r emedy   F34   Problem   w ith   Transducer   w ires   s wapped   Correct   t ransducer   w iring   readings   f rom   t he   Transducers  ...
  • Page 13 Three speed fan: HI/ME/LO relay outputs Single speed fan: ME relay output 0-10V EC fan: V2 output Select this option when the UC7 does not control the indoor fan. Reserved: Do not select Electronic expansion valve operating mode No electronic expansion valves (e.g. accurators, TX valves...).
  • Page 14 Table   2 ,   S tandard   D IP   s witch   f unctions   f or   s witches   1 4,   1 5   a nd   1 6.   Switch Function Quiet mode option Disabled Enabled (D1 input) Switches 14 and 15 MUST be set to OFF.

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