Tech Controllers EU-53.3 User Manual page 45

VII. PROTECTIONS
In order to ensure the maximum safe and reliable operation, the regulator has several protections. In the case of alarm, a sound
signal is activated and a relevant message is shown on the display.In order for the controller to return to operation, the user should
press OK on the touchscreen.
In alarm, manual operation is possible, but it should be completely ensured whether the user's activities do not result in damage.
Alarm
High pressure switch error
Low pressure switch error
Control temperature too high
Titanium anode error
Defrost failure
Additional sensor alarm
Control sensor alarm (compressor)
Tank sensor alarm
External sensor alarm
Evaporator sensor alarm
Installation alarm
Possible cause
- Too high pressure in the system
- Pressure switch damaged
- Too low pressure in the system
- Pressure switch damaged
Too high temperature of compressed
gas
- Anode is not connected or connected
improperly
- Anode damage
Failure in compressor system
- Sensor short circuit
- Sensor damaged
To high or too low pressure in the
system
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Solution
- Check if the pressure switch is
connected properly
- Wait until the pressure in the system
stabilize
- Call the service
- Call the service
- Call the service
- Try again
- Call the service
- Check if the sensor is connected
properly
- Put the sensor in a different place
- Check if the wire has not been
damaged
- Check the sensor resistance
- Replace the sensor
- The alarm will turn off after a power
reset.