Daikin BPMK928B42, Service Manual

Page: 155 / 410

System control Si18-201
142 Main Functions
3.24 Compressor Protection Control
Purpose of the
Function This function ensures appropriate compressor oil level and dilution at startup.
Outline The following upper-limit frequency control is provided at the compressor OFF
→
ON edge.
(This function is inactive during defrost control.)
Details
1st stage 2nd stage 3rd stage Remarks
Startup
A
55 Hz 70 Hz 85 Hz See the diagram below.
180 sec 120 sec 150 sec
Startup
B
55 Hz 70 Hz 85 Hz See the diagram below.
180 sec 120 sec 150 sec
Startup
C
70 Hz 70 Hz 85 Hz See the diagram below.
180 sec 120 sec 150 sec
Startup
D
70 Hz 70 Hz 85 Hz Standby operation not completed
2 hours after completion of
standby operation
180 sec 120 sec 150 sec
Startup
E
70 Hz 70 Hz 85 Hz Startup pattern in defrost reset
and in heating oil recovery reset
180 sec 120 sec 150 sec
Operating frequency
(M1032)
More than 2 hours after power reset
When 2 minutes elapsed after power supply
resetting.
Discharge pipe
temperature
10˚C
Startup A
Startup B
Outside air temperature
13˚C
(M1033)
Discharge pipe
temperature
10˚C
Startup A Startup B
Startup C
Outside air temperature
13˚C
(M1034)