Trial Run - York JVOHQ Series Installation & Maintenance Manual

1. Ensure that the electrical components provided on the site (the main power switch, circuit breaker,
wire, cable conduit connection, and terminal) are chosen as per the technical manual. Verify that the
device complies with the national electrical code.
2. Use shielded wire (≥ 0.75 mm
length of the shielded wire should be less than 1000m and the wire specification and size should be
compliant with local regulations).
3. Ensure that the terminal block wiring is correct (Terminal L1 and N of the terminal block and voltage
380V). Wrong wiring connection damages the appliance and the associated components.

9.2 Trial Run

(1) Ensure that the outdoor unit stop valve is completely open and then start the machine. (If there is a
module combination, make sure that all stop valves that connect to the outdoor unit are fully open.)
(2) Turn on the indoor units one after other and ensure that refrigerant pipe setting and electric setting
of the indoor unit is set in the same system. (If you start multiple indoor units at the same time, you
cannot detect indoor unit and the corresponding outdoor unit .)
(3) Follow the steps below to perform the test run operation. Make sure that test run operation runs
smoothly:
Prompt:
If the two-wire controller (Main and Auxiliary) first start through the main wired controller.
(a) Holding down the "run mode" and "up" button on the remote control for more than 5 seconds
enables the test mode.
● For other optional wired controllers (wireless remote controller and micro controller), refer to the
installation and operation manual attached to the wired controller.
● If a wired controller controls multiple indoor units operational at the same time, check the number
of units connected to the indoor unit on the LCD screen.
● If the number of displays is incorrect, the address cannot be obtained automatically because the
wrong connection. In such cases, disconnect the power wire and check for the following points and
correct the wiring connection: (do not repeat the switch within 10 seconds of this action)
* The power of the indoor unit is not connected or the connection is not correct.
* The connection between the indoor unit cable is incorrect or the communication wire is incorrect
* The rotary switch on indoor unit board and the DIP switch are not set correctly (set address
repeat).
(b) Press the "Run Mode" button to set the operating mode.
(c) Press the "Run/Stop" button.
The run indicator lights turns on before the start of commissioning.
It is automatically set to 2 hours for test run, though the initial set of fan speed is "Low", (This mode
is the same as the normal mode) the set can be changed.
Check the operating range as shown below:
Indoor Side Temperature
Outdoor Side Temperature
DB: dry bulb temperature, WB: wet bulb temperature
NOTE:
*-5ºC~48ºC DB is stabilized operation range, 48°C~52°C DB is interval operation.
NOTICE
2
) for wiring connections to shield the electrical interference. (The total
Cooling Operation
Minimum
Maximum
Minimum
Maximum
59
15°C WB
23°C WB
-5°C DB
52°C DB*
Heating Operation
17°C DB
27°C DB
-20°C WB
15°C WB