Faults And Their Elimination; Wiring Diagram - Wolf THERM CONNECT Operation & Maintenance Instructions Manual

THERM CONNECT defrost
07
WOLF run around coil systems

07.06 Faults and their elimination

07.06.01 Min. pressure switch-off
If the pressure on the suction side of the system falls below the standard 1.5 bar, the system must be switched off
to protect the components of the pump. When the minimum pressure limitation is triggered, the frequency inverter
locks the system and the alarm lamp on the display lights up. In order to be able to acknowledge the fault, the
rest pressure of the system must be refilled to the pressure value specified on the type plate. The fault can then be
acknowledged via the reset button on the FI display.
07.06.02 Further fault messages
All other fault messages, such as the PTC thermistor of the pump or internal fault messages of the frequency invert-
er, are displayed as messages on the FI display. These can be acknowledged via the reset key after they have been
rectified.
All fault messages are forwarded to the BMS as a collective fault message.

07.07 Wiring diagram

Three-phase motor
Main switch in FI (option)
Supply line
on-site supply
release by
customer
Fault Operation
Temperatur sensor
Valve actuator
18
Temperatur sensor
ow exhaust air Return exhaust air
Pressure sensor