Johnson Controls YVAHP072B31S, Service Manual

Page: 101 / 1796

Service Manual
1-85
INSTALLATION
9.2 Test Run
This test run method is for the wired controller. As for other controllers, refer to Installation and Maintenance
Manual attached to each controller.
(1) Check to ensure that stop valves for high/low pressure gas, low pressure gas (only for Heat Recovery
System), and liquid of the outdoor unit are fully opened.
(In the case of combined outdoor units, check to ensure that all stop valves of the outdoor units are
fully opened.)
(2) Perform the test run of indoor units one by one sequentially, and then check the accordance of the
refrigerant piping system and the electrical wiring system. (If the multiple indoor units are operated
simultaneously, the system accordance cannot be inspected.)
(3) Perform the test run according to the following procedure. Ensure that the unit operates without any
problem.
NOTE:
In the case that two controllers (main and sub) are installed to the system, perform the test run from
the main controller.
< Test Run by Wired Controller >
(a) Press and hold “Menu” and “Back/Help” simultaneously for at least 3 seconds. The test run menu
will be displayed.
(b) Select “Test Run” by pressing “ ” and press “OK”.
The test run screen will be displayed.
Ɣ The total number of indoor units connected are displayed
on the Liquid Crystal Display (LCD). A twin combination
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and a triple combination (of one set with three indoor
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NOTE:
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may be activated. Cancel “Test Run” mode and reset it.
Ɣ If the indicated number is not equal to the actual number of connected indoor units, the auto-
address function is not performed correctly due to incorrect wiring, or electronic noise (EMI).
Turn OFF the power supply, and correct the wiring after checking the following areas: (Do not
repeat turning ON and OFF within 10 seconds.)
* The power supply for the indoor unit is NOT turned ON or there is incorrect wiring.
* A loose connection between indoor units or the wired controller.
* Incorrect Setting of Indoor Unit Address (The indoor unit address is overlapped.)
(c) Start the Test Run.
Ɣ Press “ 2Q2II´7KH7HVW5XQRSHUDWLRQZLOOVWDUW7KHRSHUDWLRQPRGHWKHDLUÀRZYROXPH
WKHDLUÀRZGLUHFWLRQDQGWKH7HVW5XQWLPHFDQEHVHWRQWKH7HVW5XQVFUHHQ6HOHFWWKHLWHPE\
pressing “ ” and set the detail by pressing “ ”.
The default setting for the Test Run time is a two-hour OFF timer.
Ɣ Check the temperature conditions.
Unit operation cannot be performed if the conditions are out of range.
Refer to the table below for a working range.
< Example >
The cooling operation is not performed if the outdoor temperature is below 14
o
F DB (-10
o
C DB).
Cooling Operation Heating Operation
Indoor
Temperature
Minimum 69
o
F DB/59
o
F WB (21
o
C DB/15
o
C WB) 59
o
F DB (15
o
C DB)
Maximum 89
o
F DB/73
o
F WB (32
o
C DB/23
o
C WB) 80
o
F DB (27
o
C DB)
Outdoor
Temperature
Minimum 14
o
F DB (-10
o
C DB) * -4
o
F WB (-20
o
C WB) *
Maximum 118
o
F DB (48
o
C DB) * 59
o
F WB (15
o
C WB) *
DB: Dry Bulb, WB: Wet Bulb
*: Refer to “Page i” for details.
Test Run Screen
Back
Test Run Setting: 2 units
MODE : COOL
SPEED : AUTO
ON Rtrn Sel. Adj.