Daikin VRV 5-S - To Check the Insulation Resistance of the Compressor

20 | Electrical installation
Installer and user reference guide
128
RXYSA8~12AMY1B
VRV 5-S system air conditioner
4P752782-1A – 2024.02
8 HP 10-12 HP
A6P
A6P
a
a
b
b
b
3 Turn ON the DIP switch (DS1‑1). See "21.1.2Field setting components"[4130]
for more information on the DIP switch.
OFF
ON
1 2 3 4
DS1 DIP switch 1
20.5 To check the insulation resistance of the compressor
NOTICE
If, after installation, refrigerant accumulates in the compressor, the insulation
resistance over the poles can drop, but if it is at least 1 MΩ, then the unit will not
break down.
▪ Use a 500V mega-tester when measuring insulation.
▪ Do NOT use a mega-tester for low voltage circuits.
1 Measure the insulation resistance over the poles.
If Then
≥1MΩ Insulation resistance is OK. This procedure is finished.
<1MΩ Insulation resistance is not OK. Go to the next step.
2 Turn ON the power and leave it on for 6hours.
Result: The compressor will heat up and evaporate any refrigerant in the
compressor.
3 Measure the insulation resistance again.