Daikin VRV R-407C PLUS Series Service Manual page 73

Outline of Control (Outdoor Unit)
[In heating operation]
[Defrosting in oil return mode]
SVTs turns ON continuously
3.13.2 Operating Frequency Control
[INV Compressor]
HTdi≥110˚C
Normal operation
HTdi<105˚C
[STD Compressor]
HTds1, HTds2≥110˚C
Normal operation
HTds1, HTds2<105˚C
62
• Tds1, Tds2≥100˚C
• LP<0.05MPa
OR
• (HP+0.10) / (LP+0.10)>8
Normal operation
• Tds1, Tds2<90˚C
&
• LP<0.07MPa
SVTs is OFF at any case when STD compressor stops.
Compressor upper-limit frequency
(Nearest lower step listed below)
•71Hz+ON+OFF
•75Hz+OFF+OFF
•41Hz+OFF+OFF
Compressor stop (for 5 min)
HTdi : Adjusted discharge temperature
for Inverter Compressor
SVTs1 (Y4S), SVTs2 (Y6S) : ON
2 min
HTdi≥115˚C
41Hz+OFF+OFF
HTds1, HTds2>130˚C
Forced
thermostat OFF
F3 Malfunction
stop
∗ Malfunction reset
HTdi<115˚C
HTs1, HTs2<115˚C
SiE 00-07
(V0830)
HTdi>130˚C
Up to 2 times
within 100 min
HTdi, HTds1, HTds2>130˚C
(V0831)
Function R-407C PLUS Series