Discharge Pipe Temperature Control - Daikin 2MXS-N Series Service Manual

Control Specification
3.4.5 Compressor Protection Function
When turning the compressor from OFF to ON, the upper limit of frequency is set as follows.
(The function is not used when defrosting.)
3.5

Discharge Pipe Temperature Control

Outline The discharge pipe temperature is used as the internal temperature of the compressor. If the
discharge pipe temperature rises above a certain level, the upper limit of frequency is set to keep
the discharge pipe temperature from rising further.
Detail
66
(Hz)
Frequency
C
B
A
A (Hz)
B (Hz)
C (Hz)
D (seconds)
E (seconds)
F (seconds)
A
B
Discharge pipe
temperature
A
B
C
D
E
The same value continues.
Zone
Stop zone When the temperature reaches the stop zone, the compressor stops.
Dropping zone The upper limit of frequency decreases.
Keep zone The upper limit of frequency is kept.
Reset zone The upper limit of frequency is canceled.
D E F
18 class 24/36 class
55 35 ~ 55
65 48 ~ 65
80 70 ~ 80
180 120
360 200 ~ 500
400 180 ~ 470
Stop zone
Dropping
zone
C
Keep
zone
D
Reset zone
18 class 24/36 class
120˚C (248˚F) 120˚C (248˚F)
103˚C (217.4˚F) 111˚C (231.8˚F)
102˚C (215.6˚F) 109˚C (228.2˚F)
100˚C (212˚F) 107˚C (224.6˚F)
95˚C (203˚F) 107˚C (224.6˚F)
Control
SiUS121502E
(sec.)
Time
(R13528)
E
(R14266)
Function and Control