Outdoor Unit; Self-Check - Mitsubishi Electric PEH-P400 Manuel D'installation

2) Outdoor unit

1) Check Items
• After installation of indoor and outdoor units, and piping and electric wiring
work, check that the unit is free from leaks of refrigerant, loosened connec-
tions, and incorrect polarity.
• Check that there is no negative phase and open phase. (The F1 message for
negative phase and the F2 message for open phase will flash at LED 1 on the
outdoor substrate. If this happens, rewire correctly.)
• Measure the impedance between power terminals (Single phase: L, N,
triple phase: L1, L2, L3, N, ) and the ground with a 500 V Megger and check
that it is 1.0 MΩ or more. Do not operate the equipment if measurement is less
than 1.0 MΩ. * Never conduct this operation on the outdoor connection wiring
terminals (S1, S2, S3) as this causes damage.
• When there is no error at the outdoor unit.
(If there is an error at the outdoor unit, it can be evaluated at LED 1 [digital
display] of the outdoor substrate.)
• The stop valves are open both the liquid and gas sides.
After checking the above, execute the test run in accordance with the follow-
ing.
2) Test run start and finish
• Operation from the indoor unit
Execute the test run using the installation manual for the indoor unit.

11.3. Self-check

Retrieve the error history of each unit using the remote controller.
1 Switch to the self check mode.
When the H [CHECK] button is pressed twice successively within three sec-
onds, the display shown below appears.
Self check address or self check refrigerant address
3 Self check result display <Error history> (For the contents of the error code, refer to 13. Troubleshooting, error code list.)
Error code 4 digits or error code 2 digits
4 Error history reset
The error history is displayed in 3 Self check results display.
When the D [
MENU] button is pressed twice successively within three sec-
onds, the self check address or refrigerant address flashes.
5 Self check reset
There are the following two ways of resetting self check.
Press the H [CHECK] button twice successively within three seconds → Resets self check and returns to the state before self check.
ON/OFF] button → Self check resets and indoor units stop.
Press the I [
18
ERROR CODE
<When there is no error history>
ERROR CODE
ERROR CODE
(When operation is prohibited, this operation is ineffective.)
• Operation from the outdoor unit
Execute settings for test run start, finish and operation mode (cooling, heating)
using the DIP switch SW 4 on the outdoor substrate.
[Fig. 11.2.1] (P.6)
A Stop
C Operation
1 Set the operation mode (cooling, heating) using SW 4-2
2 Turn ON SW 4-1, The operation mode for SW 4-2 will be adhered to, and
the test run will commence
/
3 Turn OFF SW 4-1 to finish the test run
• There may be a faint knocking noise emitted from the proximity of the fan
during the test run. This is torque fluctuation occurring due to control of fan
revolutions. There is no problem with the product.
Note:
The SW 4-2 operation mode cannot be changed during the test run. (To change
test run mode, stop the equipment with SW 4-1, change the operation mode,
then restart test run with SW 4-1.)
•
If the 2-hour timer is set, the test run will stop automatically after 2 hours.
•
During the test run, the room temperature display on the indoor unit will indi-
cate the temperature of the indoor unit piping.
2 Set the address or refrigerant address No. you want to self check.
When the F [
TEMP. (
creases and increases between 01 and 50 or 00 and 15. Set it to the address
No. or refrigerant address No. you want to self check.
Approximately three seconds after the change operation, the self check refrig-
erant address changes from flashing to a steady light and self check begins.
Address 3 digits or unit address No. 2 digits
<When opposite side does not exist>
ERROR CODE
ERROR CODE
When the error history was reset, the display shown below appears.
When error history reset failed, the error contents are displayed again.
ERROR CODE
B Cooling
D Heating
) and ( )] buttons are pressed, the address de-