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2. Special operation for maintenance check (SW800 and SW801 operations)
The following special operations for maintenance check can be performed by handling the service switches
SW800 and SW801.
[Operating method]
1) Check LED display is the initial status. If it is not so, set the initial status.
2) Push and hold SW800 for 5 seconds or more and then check D804 flashes slowly.
3) Push SW800 and then stop it at the LED display of the function item to be set.
4) Push SW801 and then stop it at point where D805 becomes rapid flashing.
5) Push and hold SW801 for 5 seconds or more. D804 changes to slow flashing, D805 changes lighting and
then the special operation becomes valid.
6) To invalidate various settings, push and hold SW800 and SW801 for 5 seconds or more simultaneously.
D800 to D804 go off (or rapid flashing), D805 goes on (Initial status: Display of error which is occurring at
present), and then the special operation becomes invalid (normal control).
* If an unknown point generated on the way of the operation, push and hold SW800 and SW801 for 5 seconds
or more simultaneously. You can return to the item 1).
D800 D801 D802 D803 D804
LED displaySpecial operation
Refrigerant recovery
operation
Control contents
The outdoor unit performs cooling operation. As the
indoor unit does not operate by this operation only, carry
out the fan operation beforehand. (Refer to 9-3-1.)
D800 D801 D802 D803 D804
PMV full open
operation
Open PMV (Electronic expansion valve) fully.
Execute the following item 6) or the control returns to
normal operation after 2 minutes. (Refer Note 1)
D800 D801 D802 D803 D804
PMV full close
operation
Close PMV (Electronic expansion valve) completely.
Execute the following item 6) or the control returns to
normal operation after 2 minutes. (Refer Note 1)
D800 D801 D802 D803 D804
PMV middle
opening operation
Open PMV (Electronic expansion valve) to middle
position (250 pulses).
Execute the following item 6) or the control returns to
normal operation after 2 minutes. (Refer Note 1)
D800 D801 D802 D803 D804
Indoor heating trial
operation command
Carry out a trial heating operation.
The operation returns to the normal control by executing
the following item 6). (Refer Note 2)
D800 D801 D802 D803 D804
Indoor cooling trial
operation command
Carry out a trial cooling operation.
The operation returns to the normal control by executing
the following item 6). (Refer Note 2)
D800 D801 D802 D803 D804
Fan motor forced
operation
Operate the fan motor forcedly.
Execute the following item 6) or the control returns to
normal operation after 2 minutes. (Refer Note 1)
D800 D801 D802 D803 D804
4-way valve relay
operation
Turn on 4-way valve power relay (CN700)
Execute the following item 6) or the control returns to
normal operation after 2 minutes. (Refer Note 1)
: ON,
: OFF,
: Rapid flashing (5 times/second)
(Note 1) Although these special operations are available even operating time, basically carry out these
operations while the machine stops. If carrying out these operations, the pressure may change
suddenly and a danger may grow.
(Note 2) Indoor trial cooling operation request / Indoor trial heating operation request
Cooling/heating trial operations are available from the outdoor unit only in combination with the
following indoor units.
Trial operation is available: Indoor units after 4 series (RAV-SM
****
4
*
T-E)
Trial operation is unavailable: Indoor units except the above units or in case that the indoor units
except the above units are included at twin connection.
Note) The forced trial operation in this setting cannot be cleared by the indoor remote controller.
Be sure to clear it by operation of the outdoor unit (6 below).