Carrier 30AWH004H - Unit protection devices; Maintenance; Cleaning the coil; Refrigerant charge check

15
30AWH
Maintenance
Cleaning the coil
If necessary, proceed as follows for more careful cleaning
of the coil:
Switch the mains supply OFF.
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lifting the cover. Carefully clean the coil with a vacuum
cleaner from inside to outside. With the same vacuum
cleaner, remove the dust from inside the fan compartment
and the fan blades. Avoid any damage to the blades which
may cause future vibrations and noise.
Replace the unit cover and tighten the screws.
Unit protection devices
IMPORTANT
During functioning in heat pump heating mode, the unit performs defrost cycles to eliminate any ice that might form at low
temperatures inside the outdoor unit.
Type of safety device Switch on pressure Release
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Delayed compressor start
0''0/
180 s max*
Delayed compressor stop
0/0''
180 s*
Start Acceleration Limit compressor 6 accelerations/h*
IMPORTANT
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This check becomes necessary after any refrigerant leak or
after replacement of the compressor.
The best method to correctly charge refrigerant is to
completely empty the refrigerant circuit using refrigerant
recovery equipment.
Then charge the exact quantity of refrigerant according to
the data shown on the unit nameplate.
R-410A systems must be charged with liquid refrigerant.
Use the special recharging equipment (normally on the
market) to control the refrigerant correctly.
* the 6 acceleration/h logic has the priority
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