Mitsubishi Electric Fresh Master GUF-50RDH4 Installation Instructions Manual page 22

When operating the Fresh Master for a test
run
1 Turn ON the test run switches (1, 7, 8) of the function changeover
switch (SW1).
Switch OFF ON
Power is delivered to the fans for air supply
1
and exhaust, and they start operating.
The damper motor is powered on, and the
7
bypass ventilation is activated.
SW1
The solenoid valve unit with a pressure
8
regulator that supplies water to the solenoid
valve unit with a pressure regulator for the
humidifier is powered on, and water is sup-
plied (GUF-50, 100RDH4 only).
Notes:
- When the test run switches (1, 7, 8) are turned on, the Remote
controller inspection code "0900" is displayed.
- The operating sound of the damper plate is generated when
the test run switch 7 is turned on. However, it is not abnor-
mal.
2 Turn off the test run switches (1, 7, 8).
When operating the Fresh Master directly
using the Remote controller (SW3-1 is ON)
Operational Procedure
1 Turn ON power at least 12 hours before operation
2 Press [TEST RUN] button twice → displaying "TEST RUN" on the screen
3 Press [Selecting operation] button → Check that wind is blowing out
4 Press [Selecting operation] button to change over to cooling (or
heating) → Check that cool (or warm) air is blowing out
5 Press [Fan speed adjustment] button → Check that the wind
speed is changed
6 → Check that the outdoor unit fan is operating
7 Press [ON/OFF] button to clear test run → Test run stops
CENTRALLY CONTROLLED
DAILY
AUTO OFF
CLOCK
REMAINDER
CHECK
STAND BY ˚C
DEFROST
TEMP.
3
CLOCK→ON→OFF
4
TIMER SET
PAR-F27MEA
A Lighting in operation
B Displaying inspection code
C Displaying remaining test run time
D Displaying indoor unit's liquid pipe temperature
E Displaying test run
Notes:
- It takes a while until warm air comes out when heating. When
cooling, make sure that the display on the remote control
shows "Cooling".
- The 2-hour-set timer is activated to automatically stop test
run after two hours.
Mode
B
C
D
1Hr.
ON OFF ˚C
FILTER
CHECK MODE
E
TEST RUN
NOT AVAILABLE LIMIT TEMP.
ON/OFF
7
A
FILTER
CHECK TEST
2
5
When operating the Fresh Master by syn-
chronizing with the indoor unit
During test operation of the indoor unit, press the ventilation but-
ton to operate the Fresh Master simultaneously.
Check to make sure that the mode is the same as the indoor unit
operation mode.
Notes:
- If the Remote controller shows an inspection code or does
not operate normally, refer to the outdoor unit installation
manual.
- The 2-hour-set timer is activated to automatically stop test
run after two hours.
- The Remote controller displays the remaining test run time
on the time display section during test run.
- The Remote controller displays the temperature of the indoor
unit's liquid pipe on the temperature display section during
test run.
- Depending on the model, the Remote controller displays
"This function is not available" when pressing the [Up/down
airflow selection] button. This is not a malfunction.
In case of abnormality during a test-run
operation
If the unit fails to operate normally, check the phenomena and
causes listed below, and correct the problem. (The phenomena
listed below are applicable to the test-run mode.)
Phenomenon
(1) No Remote controller
display appears at all.
(2) No Remote controller
display appears at all.
(3) Inspection code "6600"
flashes.
(4) Inspection code "7107"
flashes.
(5) Inspection code "7106"
flashes.
Cause
The source power supply is not
turned on.
Wiring error, short-circuit or con-
tact failure of transmission line
Error in setting the indoor unit
address
There are duplicate address set-
tings, meaning there are indoor
units with the same address.
Error in setting the branch exit
number.
The Remote controller was con-
nected with the SW3-1 OFF.
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