10
6-2 Contents of line 2 to 4
Line 2 through 4 displays data received. However, since the position to display the data received is
specified (for example, the compressor operating frequency is displayed on page 2 line 2), no data is
displayed on the line when the data is not received.
Exceptionally, when transmission error occurs, the data appears on line 4 regardless of the page.
Caution 1:
Although some meaningless data could be displayed, ignore such data. For example, the data on the
liquid pipe temperature thermistor is displayed on indoor unit in RA pair system sometimes. However,
since the product is not equipped with the liquid pipe temperature thermistor, ignore the data. (Refer to
heat exchanger thermistator value)
Caution 2:
If incompatible data between operating status and checker is displayed, that is, if required operating
frequency=F13 (operating frequency instruction on level 13)and direct operating frequency
instruction=0Hz are displayed at the same time, carry out problem diagnosis checking actual operating
conditions.
6-3 Line 4 on page 1 for outdoor/indoor units display
Malfunction data indicated on remote controller is displayed here. Since the data is displayed with
malfunction codes, refer to service manual, etc. for the meaning of malfunction codes. Problems that
occurred in indoor unit are indicated only on the indoor unit display, and malfunctions that occurred in
outdoor unit are indicated only on the outdoor unit display. For example, although the remote controller
displays C9 (indoor temperature thermistor malfunction), the malfunction code is displayed as 00 when
the outdoor unit data is displayed on the Transmission Monitor. Since A5 (High pressure control) is a
failure that could occur on indoor and outdoor units, the use of the Transmission Monitor can judge
whether A5 comes from the indoor unit or outdoor unit.
Further, there is the following level in the malfunction codes.
(1) Caution error “CAUTION”: Outputs malfunction code but let the unit keep running (clogged air
filter, overtime of filter cleaning set time, etc.)
(2) Alarm error “ALARM”: Anyway, keeps running. Frequent actuation of ALARM stops the unit to
run.
(3) Thermostat-OFF error “Th-off Er”: Stops the compressor once and carry out control similar to
thermostat OFF control. When the problem is released, resets automatically (Overload, Freeze-up
protection, etc.)
(4) System down error “ERROR”: Does not reset unless the system is stopped once, the power is turned
off, the problem is released by the remote controller, etc.
The difference in the level is displayed on the Transmission Monitor.
Out-DrComp=OFF 1P
㧦
㧦
ALARM =H8
Out-DrComp=OFF 1P
㧦
㧦
ERROR CODE =C3
Out-DrComp=OFF 1P
㧦
㧦
No Error
For ALARM error For system down For normal operation
With regard to handling of the product against the error level, various detailed control methods are
applicable depending on the characteristics (difference in RA/SA) of the product. (For example, the
system should be down at how many times the error occurs, or the counting of error occurrence should
be cleared in which condition, etc.) Therefore, the error level can be recognized as a target when the
actual servicing is carried out.
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