Test Run Procedures; Indoor Unit - Mitsubishi Electric PEH-P400 Manuel D'installation

11.2. Test run procedures

1) Indoor unit

Operating procedures
1 Turn on the main power supply
While the display on the remote controller indicates "
is disabled. Turn off the " " indicator before using the remote controller.
"CENTRALLY CONTROLLED"
indicator
2 Press the [TEST] button twice successively within three seconds. Test
run starts.
"TEST RUN" and "OPERATION MODE" are displayed alternately.
3 Press [
] button
Cooling/drying mode: Cool air should start to blow.
Heating mode: Warm air should start to blow (after a while).
4 Check the outdoor unit fan for correct running
The outdoor unit features automatic capacity control to provide optimum fan
speeds. The fan keeps running at a low speed to meet the current outside air
condition unless it exceeds its available maximum power. Then, in actuality,
the fan may stop or run in the reverse direction depending on the outside air,
which does not mean malfunction.
5 Press the [ ON/OFF] button to reset the test run in progress
• The test run will be automatically shut down after two hours in response to the
AUTO STOP setting of two hours on the timer.
• During the test run, the room temperature display shows the indoor unit tubing
temperatures.
Remote Controller Display
Remote controller is displaying "PLEASE WAIT", and
operation is not possible.
After power is turned ON, "PLEASE WAIT" is dis-
played for 3 mins., then error code is displayed.
Power is turned ON, and "EE" or "EF" are displayed
after "PLEASE WAIT" is displayed.
Display messages do not appear even when remote
controller operation switch is turned ON (operation
lamp does not light up).
Operation display appears but soon disappears even
when remote controller operations are executed.
* Press the remote controller's "CHECK" button twice consecutively to be able to run a self-check. See the chart below for content of error code displays.
LCD Nonconformity Content
P1 Suction sensor error
P2 Tubing (liquid) sensor error
P4 Drain sensor error
P5 Drain overflow safeguard operation
P6 Freezing/overheating safeguard operation
See the chart below for details of the LED displays (LED 1, 2, 3) on the indoor substrate.
LED 1 (microcomputer power supply)
LED 2 (remote controller feed)
LED 3 (indoor and outdoor signals)
", the remote controller
˚C
˚C
TEMP. ON/OFF
Symptoms
Outdoor Substrate LED Display
After "startup" display, "00" is dis-
played (correct operation).
After "startup" display, error code is
displayed.
After "startup" display, "F1" (negative
phase) is displayed.
After "startup" display, "00" or "EE" is
displayed ("EE" is displayed when a
test run is made).
After "startup" display, "EA" (error for
number of units) or "Eb" (unit number
error) is displayed.
After "startup" display, "00" is dis-
played (correct operation).
After "startup" display, "00" is dis-
played (correct operation).
After "startup" display, "00" is dis-
played (correct operation).
LCD
P8 Tube temperature error
P9 Tube (2-phase tube) sensor error
U0 ~ UP Outdoor unit nonconformity
F1 ~ FA Outdoor unit nonconformity
E0 ~ E5 Signal error between remote controller and
indoor unit
Displays the ON/OFF of power for control. Check that this is lit during normal use.
Displays the ON/OFF of feed to wired remote controller. Is only lit for indoor unit linked to outdoor unit with address "00".
Displays signal between indoor and outdoor units. Check that this is flashing during normal use.
• In the case of the test run, the OFF timer will activate, and the test run will
automatically stop after two hours.
• The room temperature display section shows the control temperature for the
indoor units during the test run.
• Check that all the indoor units are running properly for simultaneous twin and
triple operation.
Malfunctions may not be displayed even if the wiring is incorrect.
6 Register a telephone number
The telephone number of the repair shop, sales office, etc., to contact if an
error occurs can be registered in the remote controller. The telephone number
will be displayed when an error occurs.
For registration procedures, refer to 9.4 Function selection of remote control-
ler.
˚C
TEMP. ON/OFF
MENU ON/OFF FILTER
BACK MONITOR/SET DAY CHECK TEST
PAR-21MAA CLOCK OPERATION
CLEAR
(*1)
After turning ON the power, the system will go into startup mode, and the remote
controller operation lamp (green) and the display section's "PLEASE WAIT" will
flash. Also, in the case of the indoor substrate LEDs, LED 1 and LED 2 light up
(when address is 0) or become dim (when address is not 0), and LED 3 flashes. In
the case of the outdoor substrate LED display,
alternatively at 1-second intervals.
• If one of the above operations does not function correctly, the following causes
should be considered, and if applicable, dealt with. (The following symptoms
have been determined under test run mode. Note that "startup" in the chart
means the *1 display above.)
• After power is turned ON, system startup lasts for about 2 mins., and
"PLEASE WAIT" is displayed (correct operation).
• Outdoor unit's safeguard installation connector is open.
• Negative phase and open phase of outdoor unit's power terminal board
(Single phase: L, N,
• Incorrect connection of outdoor terminal board (Single phase: L, N,
triple phase: L1, L2, L3, N,
• Outdoor unit and indoor unit construction differ
• Wiring for the indoor and outdoor unit is not connected correctly. (Polarity
is wrong for S1, S2, S3)
• Remote controller transmission wire short
• There is no outdoor unit for address 0 (address is something other than
0).
• Remote controller transmission wire burnout
• After cancellation of function selection, operation is not possible for about
30 secs. (correct operation).
Nonconformity Content
E6 ~ EF
FFFF
Operation mode display
"TEST RUN" and "OPERATION MODE" are
displayed alternately.
Timer stops test run after two hours.
Piping temperature display
Stop test run by pressing the [ ON/OFF] button.
During test run, the RUN lamp remains on.
[TEST] button
[ ] button
and
Cause
/triple phase: L1, L2, L3, N, )
grounding and S1, S2, S3)
LCD Nonconformity Content
Signal error between indoor and outdoor
units
- - - - No error history
No relevant unit
are displayed
/
17