Glow-worm Envirosorb3 - Manual (Page 37)

Appendix
0020154078_03 Envirosorb₃ Installation instructions 37
Code Meaning Cause
536 Compressor outlet temperature too high (depends on
the compressor's operating range) – Coolant quantity too low
– Sensor is faulty or incorrectly connected to the main PCB
– Pressure drop in the liquid line (pressure loss)
– Electronic expansion valve faulty
– Heat exchanger blocked
537 Outlet pressure of the compressor too high – Coolant volume too high or too low
– Incorrect evacuation
– Incondensable particle in the coolant circuit
– Pressure switch or electrical connection faulty
– Pressure drop in the liquid line (pressure loss)
– Flow quantity too high (see defined maximum flow rate)
– Electronic expansion valve faulty
– Insufficient heat transfer in the heat exchanger
539 Coolant pressure too low – Coolant quantity too low
– Air flow too low
– No thawing
– The resistance heating in the condensate collecting container is
faulty.
– 4-way valve faulty
– Electronic expansion valve motor faulty, or connection faulty
546 Sensor fault: Pressure sensor in the coolant circuit – Faulty cabling
– Sensor defective
554 Coolant pressure not in operating range – Coolant volume too high or too low
– Incondensable particle in the coolant circuit
– Electronic expansion valve faulty
– Flow quantity too high (see defined maximum flow rate)
– Pressure drop in the liquid line (pressure loss)
– Insufficient heat exchange in the plate heat exchanger or the
ribbed pipe heat exchanger
– 4-way valve faulty
582 EEV fault – Cable insulation faulty
– Connection broken
585 Sensor fault: EEV building circuit temp. – Sensor is faulty or incorrectly connected to the main PCB
685 Communication fault: eBUS – The product is not connected to the controller
– Polarity inverted
750 Compressor shut down – Cable insulation faulty
– Connection broken
751 Compressor overcurrent – Fault in the compressor
– The product's voltage supply is too low
– The ribbed pipe heat exchanger or heat exchanger is dirty
752 Fault: Inverter – Inverter casing damaged
– Cooler inverter box is dirty
– Faulty voltage supply
753 Connection fault: Inverter not recognised – The connection between the main PCB and the inverter box is
damaged or broken
– Inverter box is not switched on
754 Fault: Fan PCB – The connection between the main PCB and the fan PCB is dam-
aged or broken.
– The fan is faulty
– The fan PCB is faulty
– The power supply to the fan PCB is faulty
– The heat pump was switched on before the system's control sys-
tem (start up the control system before the heat pump or switch
on both components at the same time)
755 Positioning fault: 4-way valve Mechanical or electrical problem. Move the 4-way valve away from
the controller. When moving it, check that the coil voltage is correct.
774 Sensor fault: Air inlet temperature – The temperature sensor is faulty or incorrectly connected to the
main PCB.