Tech Controllers ST-53.4, User Manual

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8 TECHNICAL DATA
Power supply 230V ±10% /50Hz
Maximum power consumption 9W
Ambient temperature 5÷50°C
Compressor max. output load 1.1A
Fan max. output load 0.6A
Pump max. output load 0.5A
Heater max. output load 2A
KTY sensor thermal resistance - 30÷99°C
THE MANUFACTURER RESERVES THE RIGHT TO CHANGE THE TECHNICAL DATA.
9 MAINTENANCE
Before and during the heating season the ST-53.4 controller should be checked for the condition of its cables. You should also
check if the controller is properly mounted and clean it if dusty or dirty.
10 PROTECIONS
Alarm Possible cause Solution
High pressure switch error
- Too high pressure in the system
- Pressure switch damaged - Check if the pressure switch is
connected properly
- Wait until the pressure in the system
stabilize
- Call the service
Low pressure switch error
- Too low pressure in the system
- Pressure switch damaged
Control temperature too high Too high temperature of compressed
gas
- Call the service
- Call the service
Titanium anode error
- Anode is not connected or connected
improperly
- Anode damage
Defrost failure
Failure in compressor system
- Try again
- Call the service
Additional sensor alarm
- Sensor short circuit
- Sensor damaged
- 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
Control sensor alarm (compressor)
Tank sensor alarm
External sensor alarm
Evaporator sensor alarm
Installation alarm Too high or too low pressure in the
system - The alarm will turn off after a power
reset.