Daikin R407C PLUS Service Manual page 62

Si33-105
3.1.2 Malfunction Stop by Pe
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Contents
Condition
1
0
Condition
1
0
3.1.3 Malfunction Stop by Td
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Contents
Function R407C PLUS Series Heat Recovery System
Outline of Control (Outdoor Unit) < Symbols using in this manual >
Unit is conducted malfunction stop (manual reset) when Pe becomes low to prevent
compressor from seizing.
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)
• 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
Unit is conducted malfunction stop (manual reset) when Td becomes high to prevent
compressor from seizing.
Malfunction judgement conditions
• In compressor operation
1
• OR
&
• HTdi<115˚C
0
• HTs1<115˚C
• HTs2<115˚C
• HTdi≥130˚C
• HTds1≥130˚C
• HTds2≥130˚C
→ •Stops operation when low
pressure error (E4) is detected.
→ •Resets malfunction.
→ •Stops operation when low
pressure error (E4) is detected.
→ •Resets malfunction.
→ •Stops operation when discharge
pipe temperature error (F3) is
→ •Resets malfunction.
(V2554)
(V2555)
(V2556)
51