Service manual Mastercool 30
Version 1.0
1.11.2011
16
Kemppi Oy
6. SECOND GENERATION CONTROL CARD SP004736
X20
Cooling unit start.
*Open
– Waiting for power source start signal
Closed – Continuous run
X21
Liquid temperature alarm.
*Open
– PTC monitoring by cooler
Closed – PTC monitoring by power source
X22
Pump motor current minimum alarm, pressure low or no water.
*Open
– alarm on
Closed – alarm off
H1
Cooling liquid temperature too high.
H2
Pump motor current too low. Cooling liquid level too low, no liquid or air
bubble in the pump.
H3
Pump motor current too high. Blocked water hoses, no circulation.
Operational voltages and used connectors are the same as in the card SPW006214.
H2
H3
H1
X22 and X20
X21