50_ completing the installation and commissioning
completing the installation and
commissioning
COMPLETING THE INSTALLATION
• Measure the power cable terminal (3-phase: R, S, T) and the grounding of the outdoor unit using a
DC 500V ohmmeter before connecting the power.
- The measured value should be over 30
㏁.
• Check the terminal voltage and the phase using a voltmeter and phase test system before
connecting the power.
- R, S, T terminal : 220V between wires (R-S, S-T, T-R)
• Turn the switch on after checking the terminal.
• Check the R410A indoor unit is connected.
• If the power cables, R,S and T, are cross wired, E425 error occurs. Check for proper
connection of the power cable.
T
S
R
220V 220V
220V
T
S
R
220V 220V
220V
<ELB>
• Never measure the communication terminal to prevent the communication circuit from being
damaged.
• Check the short-circuit of the communication terminal using the circuit test system.
CAUTION
DVM PLUS3_IM_E_31180-1.indd 50 2009-10-16 ｿﾀﾈﾄ 2:10:40
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