25
7-2. Test Run Procedure
Items to Check Before the Test Run
1.
Turn the remote power switch on at least 5 hours before the test, in order to energize the crankcase heater.
2.
Turn the outdoor service valves (2 locations) to the full-open positions.
● Use caution when making the settings.
If there are duplicated system addresses, or if the settings for the Nos. of the indoor units are not consistent, an alarm will occur
and the system will not start.
● These settings are not made on the indoor unit PCB.
*2
*2
3*3*
Recheck the items to check before the test run.
Set the No. of indoor units.
Set the system address.
Each system to be a unique number.
When multiple outdoor units exist, disconnect the terminals extended
from the shorted plugs (CN-TERMINAL) at all outdoor main unit PCBs
except for 1. Alternatively, move the sockets to the OPEN side.
Will automatic address setting be performed
in Heating mode?
Is it OK to start the compressors?
Is it OK to start the compressors?
Turn ON the indoor and
outdoor unit power.
Check the alarm
contents.
Are LEDs 1 and 2 on the outdoor
unit PCB OFF?
Set the wired remote controller for test run.
Return remote control to normal mode
Does system operate?
Check and make corrections according to
“Table of Self-Diagnostic Functions.”
CASE 2
Make necessary corrections.
Turn OFF the indoor and
outdoor unit power.
Check the alarm contents.
Turn ON the indoor and
outdoor unit power for that
refrigerant system only.
Short-circuit the automatic address pin
(CN-A.ADD) on the outdoor unit PCB
for 1 second or longer, then release it.
LED 1 and 2 blink alternately
(about 2 or 3 minutes).
Are LEDs 1 and 2 on the
outdoor unit PCB OFF?
Are the inter-unit control wires
connected to more than 1 refrigerant
system?
Is it possible to turn ON the power only
for the 1 refrigerant system where the
test run will be performed?
Turn ON the indoor and
outdoor unit power.
Short-circuit the cooling side of the
mode change 3P pin (CN-MODE) on
the outdoor main unit PCB. At the
same time, short-circuit the automatic
address pin (CN-A.ADD) for 1 second
or longer, then pull it out. *1
Short-circuit the automatic
address pin (CN-A.ADD) on the
outdoor unit PCB for 1 second
or longer, then release it. *1
Start indoor and outdoor unit
cooling operation. LED 1 and
2 blink alternately.
Start indoor and outdoor unit
heating operation. LED 1
and 2 blink alternately.
Check that test run preparation is OK.
(Do not allow the short-circuited pins to remain short-circuited.)
End test run.
Refer to the remote
controller test-run
settings.
Refer to Figs. 7-4, -5
<Outdoor unit control PCB>
Unit No. setting switch
(S002 and S003)
(Check the link wiring.)
<Outdoor unit control PCB>
Unit No. setting switch
(S004)
*1 Use a flathead screwdriver to short-circuit the pin on the PC board.
*2 A minimum of 5 hours must have passed after the power was turned ON to
the outdoor unit.
*3 All indoor units operate in all refrigerant systems where the power is ON.
NO
YES
CASE 1
YES
NO
YES
NO
CASE 3B
CASE 3A
NO
YES
NO
Turn OFF the indoor
and outdoor unit
Make necessary
corrections
YES
NO
Refer to “Table of
Self-Diagnostic Functions
and Description of Alarm
Displays.”
YES
Fig. 7-3
MiniVRFeng.indd25MiniVRFeng.indd25 2011/08/2613:45:222011/08/2613:45:22
www.ampair.co.uk | sales@ampair.co.uk
To Next Page
Loading...
Need help?
General
