22
English
11.
TEST RUN
•
The operation lamp on the remote controller will flash when
a malfunction occurs. Check the malfunction code on the
liquid crystal display to identify the point of trouble. An ex-
planation of malfunction codes and the corresponding trouble
is provided in the outdoor unit installation manual.
If the display shows any error codes listed in Table 20, take
appropriate countermeasure according to the malfunction
code contents.
11.1
HEAT PUMP TEST OPERATION
Perform a test run according to the outdoor unit’s installation
manual.
11.2
GAS FURNACE TEST OPERATION
•
Always stop the test run using the remote controller to stop
operation.
The test should be performed with the following procedure.
1.
Complete installation process, including heat pump system,
has been done.
2.
Test operation of heat pump system has been successfully
completed.
3.
Turn off remote controller connected to CXTQ.
4.
Change the setting according to the following table. Table
19.
5.
Turn on remote controller connected to CXTQ.
6.
If running, the compressor will be forced to stop during this
test. Shortly after the compressor stops, the gas furnace
will begin test operation. The time between compressor
shut-down and gas furnace startup can take up to 15 min-
utes depending on operational conditions of the
compressor.
7.
The gas furnace will operate with selected heat stage.
8.
This test operation will stop automatically after 30 minutes
or when the remote controller is turned off.
NOTE:
a. Heat pump operation is not allowed during this test .
b. When the heat pump is in service mode (test mode, pump
down mode, refrigerant charge mode, etc.), the gas furnace
test will not start.
c. This setting will be returned to factory setting automatically
after finishing test operation.
GAS FURNACE TEST MODE
MODE
NO.
FIRST CODE
NO.
SECOND
CODE NO.
Off
01*
Low heat
02
High heat
03
*Factory set
14 (24)
11
Table 19
Remote control display
Content
"Central Control"
display
There is a short circuit at the FORCED OFF terminals (T1
T2). The system is under heat pump test mode.
"U3" display
The test-run has not been performed.
"U4" display
"UH" display
The power on the indoor unit is off. The outdoor unit
has not been wired for power supply. Wiring incorrect
for the transmission wiring and/ or FORCED OFF wiring.
The transmission wiring is cut.
"UF" display
Reversed transmission wiring.
"UH-05" display
The power on the gas furnace is off.
Wiring is incorrect for the ClimateTalk transmission
wiring.
The ClimateTalk transmission wiring is cut.
Unconnectable unit is on ClimateTalk transmission
wiring.
(CXTQ must have only one gas furnace certified with
CXTQ on the ClimateTalk circuit).
"UH-06" display
Unconnectable unit is on ClimateTalk transmission
wiring.
(CXTQ must have only one gas furnace certified with
CXTQ on the ClimateTalk circuit ).
"C1-08" display
The power on the gas furnace is off.
The ClimateTalk transmission wiring has been exposed
electrical noise.
The ClimateTalk transmission wiring is cut.
"A0-01" display
24VAC power hasn't been supplied from "R","C"
terminal.
A circuit has been opened between "TB4"and "TB5".
F1U fuse has been blown.
"AA-03" display
The gas furnace has had an error.
Check 7 segment LED on the gas furnace PCB.
No display
The power on the indoor unit is off.
The outdoor unit has not been wired for power supply.
Wiring incorrect for the transmission wiring and/ or
FORCED OFF wiring. The transmission wiring is cut.
Table 20
