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English
• The individual problems of indoor units can not be checked.
About these problems check by test run after the check operation
is completed. (See chapter 13)
• The check operation cannot be performed in recovery or other
service modes.
<About re-charging of refrigerant>
• When sizes and length of field pipings are certain, figure out the
re-charging amount of refrigerant by calculation method of refrig-
erant charging amount on the installation manual, then charge
according to “6-5. Example of connection”. (Check operation time
shall be shortened.)
Although there supposed to be no re-charging amount required
by calculation, it still occasionally needed to be re-charged
depending on the installation circumstances, etc.
• In case of long pipings, but sizes and length of field pipings are not
certain, indication for re-charging of refrigerant is shown by out-
door unit LED and (for BRC1A52) on the remote controller.
Please see the remote controller indication list at “11-2. Proce-
dure of check operation”.
<Notes on check operation>
• If operated within approx. 12 min. after turning on the indoor, BS
and outdoor units, H2P will light-on and compressor shall not start
its operation.
Please start the operation after confirming the proper indication of
LED according to “11-2-2. Check operation”.
• For multi-connecting outdoor unit systems, operation of push-but-
tons and checks of LED indications shall be done at the parent
unit.
Outdoor unit to which indoor unit connection wires are connected
is the parent unit.
• It may takes approx. 10 min. from turning on the operation till the
compressor actually starts operating. This is to equalize the
refrigerant condition, not a sign of malfunction of the system.
• Indoor unit cannot be checked individually.
Please check at normal operation by remote controller after this
check operation.
• Do not test operate while working on the indoor units.
Not only outdoor units but also indoor units are operated at the
check operation.
• Please close all the outside panels except the one for electrical
components box while working.
• Re-charging according to a check operation shall be done when
outdoor temperature is 0°C or higher, and indoor temperature is
10°C or higher.
If outdoor temperature is too low, it drops the temperature of
refrigerant tank and may not be able to charge.
If indoor temperature is too low, it may cause an excess of charg-
ing.
• Close the outside panels except when operating the push-but-
tons, or installing the charging tube.
• Sounds of refrigerant flow, activating of solenoid valves, etc. could
be from time to time louder during operation.
11-2-1. Preparation prior to check operation
1.
Make sure the following works are complete in accordance with
the installation manual.
Piping work
Wiring work
Air tight test
Vacuum drying
Installation work for indoor unit
Installation work for BS unit (Only for RQCEQ series)
2.
Calculate the “additional charging amount” using “How to calcu-
late the additional refrigerant to be charged” in “6-5 Example of
connection”.
By the calculation, additional refrigerant charging is need, pre-
pare the refrigerant tank. The size and length of the local piping
are uncertain, presume the amount of additional refrigerant, and
the proper refrigerant tank.
Though additional refrigerant is not need by calculation, addi-
tional refrigerant charging operation will be need according to the
installation conditions.
11-2-2. Check operation
• Be sure to perform check operation after initial installation.
• If check operation is terminated abnormally, a malfunction code is
displayed on the remote control. Check the malfunction code, cor-
rect the problem, and perform check operation again.
• If you attempt to resume normal operation after check operation
terminates abnormally, the malfunction code "U3" is displayed
and normal operation does not resume.
• Refer to the "Outdoor unit LED display after completion of check
operation" to terminate the operation normally.
• Check operation performs the following tests. Perform check
operation in accordance with the procedure below.
Check the shutoff valve open
Wiring error check
Contaminant treatment
Piping length calculation
Refrigerant amount check
Additional refrigerant charge (Requires connection of refriger-
ant tank depending on piping length.)
Note
• Perform check operation with an outside air temperature of 0°C or
above and an indoor temperature of 10°C or above.
Refrigerant amount checks and additional refrigerant charging
operation cannot be performed correctly during check operation.
(If the outside air temperature is too low, the refrigerant tempera-
ture may drop and the tank may not be re-charged. If the indoor
temperature is too low, the refrigerant tank may be over-charged.)
Outdoor unit LED display after completion of check operation
A malfunction code is displayed on the remote control if check oper-
ation is terminated abnormally.
[Check operation procedure]
• Heat Pump series (RQ(C)YQ)
•
Open the gas/liquid piping shutoff valve fully. (*1)
•
Adjust field settings using the dip switch (DS-1) on the outdoor
unit PCB (A1P) as necessary.
Refer to "Service Precaution" label (upper) on the lid of the
electrical component box for instructions on field settings.
•
Shut the lid of the electrical component box, and turn on all of
the outdoor and indoor units in the same refrigerant system.
(In order to stop liquid compression of the compressor, always
turn the power on six hours before operation and energize the
crankcase heater.)
•
When installing, perform check operation in accordance with
[Check operation].
After running the unit for about 45 minutes and no longer than
60 minutes(*2), the system automatically stops check opera-
tion. (*3)
Once check operation stops, it is completed unless a malfunc-
tion code is displayed. Normal operation is possible about 5
minutes after check operation is complete.
If a malfunction code is displayed, refer to the [Remote control-
ler displays malfunction code] and perform check operation
again.
(*1)
(Refer to figure 31.1)
1.
Measuring device
2.
R410A tank (with siphon)
3.
Charge hose
4.
Refrigerant flow
5.
Liquid side shutoff valve
6.
Gas side shutoff valve
7.
Refrigerant charge port
8.
Outdoor unit
9.
To indoor unit
10.
Field piping
(*2) If additional charging is required from the refrigerant tank,
more time is required for additional charging.
(*3) Press the “RETURN” button (BS3) on the outdoor unit
PCB (A1P) if check operation is forcibly cancelled.
•
Use a charging tube with a pushing projection (at the connecting
end) to connect the refrigerant charging port mounted to the shut-
off valve fixing plate.
H1P H2P H3P H4P H5P H6P H7P
Normal termination
h
h
k
h
h
h
h
Abnormal termination
h
k
k
h
h
h
h
01_EN_3P226891-14T.fm Page 21 Tuesday, September 30, 2014 7:48 PM