ENGLISH-95
03
O
thers
Checklist before auto trial operation
1 . Check the power cable and communication cable of the indoor and outdoor unit .
2 . Supply power to the outdoor unit 6 hours before trial operation to pre-heat the crank case heater .
3 . Before supplying the power, use a voltmeter and phase tester to check the voltage and the phase .
- R, S, T, n terminal: check if the voltage is within 380 -415 V between wires (R-S, S-T, T-R) and 220-240 V between phases
(R-n, S-n, T-n) .
4 . When the power is supplied, outdoor unit will execute tracking to check the indoor unit connection and other optional
functions .
5 . Write down the installation report on the service history report paper attached on the front part of the control box .
•
Supply power to the outdoor unit 6 hours before auto trial operation to pre-heat the crank case heater .
CAUTION
6 . Guaranteed range of auto trial operation
For precise judgment, you must perform auto trial operation in below indoor/outdoor temperature condition .
40
45
30
20
10
35
25
15
5
0
0
5
10
15
20
25
30
35
40
45
Indoor temperature (°C)
Cooling
Heating
Inlet w
at
er t
emper
atur
e (°C
)
- In Auto trial operation, product will automatically select either cooling or heating mode and operate in selected mode .
- In the temperature range marked with slashed pattern, system protection control may trigger during operation .(If the
system protection control is enabled, it can be hard to get the precise judgment after the auto trial operation .)
- When the temperature is outside of guaranteed range, accuracy of judgment on auto trial operation may decrease near
boarder line area .
