306
Test Run
6.3 Checking at Test Run
(1) Indoor and Outdoor Fan
Inspect that the indoor fan and outdoor fan rotate correctly and the air ow is smooth.
(2) Power Supply Voltage
Check the power supply.
If the power supply is abnormal, contact with electric
power company.
Usually, voltage drop will occur when starting as
shown in the gure (V
2
).
In order to protect device, comply with the following
normal range of the power supply voltage.
<Normal Range of Power Supply Voltage>
• Supply Voltage: Rated Voltage ±10% Operating Voltage (V
3
): Rated Voltage ±10%
• Starting Voltage (V
2
): Rated Voltage -15% Voltage Imbalance between Phase: ≤3%
(3) Normal Operating Pressure
Normal operating suction pressure is 29psi (0.2 MPa) to 160psi (1.1MPa) and normal operating discharge pressure is
145psi(1.0 MPa) to 508psi(3.5MPa) when the refrigerant charge is correct. Check the operation pressure by the test run
mode.
(4) High Pressure Switch
Check the operation pressure of the high pressure switch in the table below.
Refrigerant Operation Pressure
R410A 602psi (4.15MPa)
(5) High Pressure Increase Retry (Protection Control)
a . The high pressure will be increased when the following procedure is performed.
Cover the air inlet of outdoor unit
during cooling operation.
Cover the air inlet of indoor unit
during heating operation.
Initial Voltage
(V
1)
Starting Voltage
(V2)
Operating Voltage
(V
3)
b . When the high pressure retry control is activated, alarm code “
P13
”will be indicated on the 7-segment of outdoor unit
PCB. If the high pressure retry control occurs 3 times or more within 30 minutes, alarm code “
45
” will be indicated on
the LCD of remote control switch or the 7-segment of outdoor unit PCB.
NOTE:
The high pressure may not increase until the high pressure switch is activated due to the temperature condition.
< Voltage Change >
To Next Page
Loading...
Need help?
General
