Daikin R407C PLUS, Service Manual

Page: 62 / 267

Si33-105 Outline of Control (Outdoor Unit) < Symbols using in this manual >
Function R407C PLUS Series Heat Recovery System 51
3.1.2 Malfunction Stop by Pe
!
Unit is conducted malfunction stop (manual reset) when Pe becomes low to prevent
compressor from seizing.
Contents
!
Malfunction judgement conditions
Condition
Condition
3.1.3 Malfunction Stop by Td
!
Unit is conducted malfunction stop (manual reset) when Td becomes high to prevent
compressor from seizing.
Contents
!
Malfunction judgement conditions
•
In compressor operation
•
Pe<0 MPa (–37.0˚C)
•
Not in defrosting and oil return operation
•
Elapsed time of 10 minutes or more after
defrosting and oil return operation completion
•
Pe
≥
0.06 MPa(–26.7˚C)
→ •
Stops operation when low
pressure error (E4) is detected.
→ •
Resets malfunction.
I
&
H
(V2554)
•
In compressor operation
•
Th7–Te>45˚C and Pe<0.15 MPa (–16.5˚C)
continues for 3 minutes
•
Injection on inverter side = ON
•
After turning on power supply, within 20 minutes
after the initial startup of compressor
•
Compressor stop
→ •
Stops operation when low
pressure error (E4) is detected.
→ •
Resets malfunction.
I
&
H
(V2555)
•
HTdi
≥
130˚C
•
HTds1
≥
130˚C
•
HTds2
≥
130˚C
•
HTdi<115˚C
•
HTs1<115˚C
•
HTs2<115˚C
•
In compressor operation
•
OR
→ •
Stops operation when discharge
pipe temperature error (F3) is
→ •
Resets malfunction.
I
&
H
(V2556)