Protection Control SiEBE18-526
68 Function
In heating operation
High pressure not limited
• During heating normal operation
• Not during oil return operation
• Not after oil return operation
• Not during defrost operation
• Not after defrost operation
• Pc
>3.10MPa
High pressure limited
&
• INV upper limit frequency
• Pc≤2.95MPa
or
&
• Increase the operating room
• Pc<3.00MPa
&
• During oil return operation
• After oil return operation
• During defrost operation
• After defrost operation
• Cooling operation
• During pump-down residual operation
INV upper limit frequency:
1-step down from current
compressor frequency
Overload control in
heating
Keeping the current step
Every 10 sec. Pc
>3.10MPa
INV upper limit frequency:
1-step up from current
compressor frequency
Pc
<3.00MPa
Pc
>3.20MPa
(Q0375)
Every 60 sec.
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