5.2 Safety protection and control
Compressor protection
The compressor is protected by the following devices:
• High pressure switch: this stops the compressor when the discharge pressure exceeds the set value.
• Oil heater: this prevents oil from being lost during cold starts, as it is enabled while the compressor is at a standstill.
• Fan motor protection: internal thermostat located in the fan motor winding. This stops the fan motor when the winding
temperature exceeds the set value.
Setting control and safety devices for indoor units
Model RCI(M) RCD RPC RPIM RPI RPK RPF(I) Remarks
For the evaporator fan
motor: Internal thermostat
Switch
off
°C 145±5 130±5 135±5 135±5 140±5 130±5 130±5
Automatic reset, non-
adjustable (one per
motor)
Switch
on
°C 90±15 83±15 90±15 90±15 90±15 83±15 83±15
For the control circuit: Fuse
capacity
– A 5
Freeze protection
thermostat:
Switch
off
°C 0
Switch
on
°C 14
Differentialthermostat – °C 2
5 Control system
175
SMGB0063 rev. 1 - 10/2010
5
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