Crystal Vertical 120 - List of Fault Codes and Actions

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7. Repairs
7.2 List of faults
Code Fault Possible causes Action
03
Flow sensor malfunction
Insufficient water in heat exchanger
Check your water circuit operation and the opening of the By-Pass
valves
Sensor disconnected or defective Reconnect or replace sensor
04
Antifreeze protection
Protection activated when the ambient temperature is too low and
the unit is on standby
No intervention is necessary
05
High pressure protection
Insufficient water flow
Check water pump operation and openings of By-Pass inlet/outlet
valves
Excess refrigerant gas Readjust the refrigerant volume
Defective 4-way valve Replace the 4-way valve
High pressure switch disconnected or defective Reconnect or replace high pressure switch
06
Low pressure protection
Insufficient refrigerant gas Readjust the refrigerant volume
Defective 4-way valve Replace valve
Low pressure switch disconnected or defective Reconnect or replace low pressure switch
09
Connection problem between PCB and wired
remote control
Bad connection Check wiring connections between remote control and PCB
Defective wired remote control Replace remote control
Defective PCB Replace PCB
10
Connection problem between PCB and inverter
module
Bad connection Check wiring connections between PCB and inverter module
Defective inverter module Replace inverter module
Defective PCB Replace PCB
12
Vented air temperature too high Insufficient refrigerant gas Readjust the refrigerant volume
13
Vented air temperature too low
Ambient temperature too low Check the ambient temperature
Sensor disconnected or defective Reconnect or replace sensor
15
Water intake temperature sensor malfunction Sensor disconnected or defective Reconnect or replace sensor
16
Outside coil temperature error Sensor disconnected or defective Reconnect or replace sensor
18
Vented temperature error Sensor disconnected or defective Reconnect or replace sensor
20
Inverter module protection See chapter Appendices
21
Ambient temperature error Sensor disconnected or defective Reconnect or replace sensor
23
Water temperature at outlet too low for cooling
mode
Insufficient water flow
Check water pump operation and openings of By-Pass inlet/outlet
valves
27
Water outlet error Sensor disconnected or defective Reconnect or replace sensor
29 Backed temperature error Sensor disconnected or defective Reconnect or replace sensor
32
Outlet temperature too high for heating mode
protection
Insufficient water flow
Check water pump operation and openings of By-Pass inlet/outlet
valves
33
Coil temp too high (higher than 60°C) for cooling
mode protection
Refrigerant overcharged Readjust the refrigerant volume
Fan motor doesn’t work or air outlet blocked Check the fan is working properly and the air inlet is unobstructed
34
Too great a difference between the inlet
water temperature and the outlet water
temperature
Insufficient water flow
Check the good circulation of water in the heat pump, and the
opening of the inlet / outlet valves of the By Pass
Sensor disconnected or defective Reconnect or replace sensor
42 Inside coil temperature error Sensor disconnected or defective Reconnect or replace sensor
46
DC fan motor malfunction
Bad wire connection Reconnect the fan
Fan motor is defective Replace the fan motor