Daikin Super Multi Plus D-Series Service Manual page 79

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