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3. While the system is in operation, check the following on
the outdoor unit:
a. No abnormal vibration or noise is noticed.
b. Condenser fan is in operation.
c. Indicator light is showing normal operation and no
error is indicated.
NOTE: If the unit is turned off or restarted, there is a time
delay of 3 minutes for the compressor to start from the time the
power is restored.
MAINTENANCE
CAUTION
When servicing or repairing this unit, use only factory-
approved service replacement parts. Refer to the rating
plate on the unit for complete unit model number, serial
number and company address. Any substitution of parts or
controls not approved by the factory will be at the owner's
risk and may result in equipment damage.
CAUTION
To avoid equipment damage, do not attempt to reuse any
mechanical or electrical controllers that have been wet.
Replace defective controller.
EVERY 3 MONTHS:
• Check the air filter condition. Clean or replace if
necessary.
EVERY 6 MONTHS — Follow the 3-month maintenance
schedule. In addition:
• Clean condensate tray with suitable cleaning agent.
• Clean the grille and panel if applicable.
EVERY 12 MONTHS — Follow the 6-month maintenance
schedule. In addition:
• Be sure all electrical connections are secure.
• Check condensate pump operation if applicable.
• Check the heating and cooling action to confirm proper
operation.
INDOOR UNIT ADDRESSING
For proper system operation, each indoor unit must have a
unique address set from 0 to 63. When setting an address by
remote controller; the outdoor units, indoor units, and MDC
must be powered on. If "FE" is displayed on the LED screen or
display board, this unit has no address. After setting all indoor
unit addresses, turn off the power supply to all indoor units to
clear the errors.
Indoor unit addressing can be distributed automatically in
the heat pump system. When dip switch "S6" on the outdoor
unit's main PCB board is set to 00 (default set in factory),
indoor units are set for auto-addressing. When powering on for
the first time, it takes 6 minutes or more to finish auto-
addressing each indoor unit. The heat recovery system cannot
accomplish this function at this time.
Wireless Remote Controller (40VM900001) —
Indoor unit addressing can be performed using the wireless
remote controller. When using the wireless controller, the user
must maintain a line of sight with the receiver on the indoor
unit. See Fig. 35 for a description of the buttons on the wireless
remote.
1 – MODE SETTING
3 – ADJUST DOWN
5 – ON/OFF
7 – AIR VERT. SWING
8 – AIR HORIZ. SWING
12 – RESET
13 – LOCK
15 – COOL/HEAT
Fig. 35 — Wireless Remote Controller
1. Use a tool to press and hold the LOCK button for at least
10 seconds.
2. Press
to activate.
3. Click
or
the setting.
To display an indoor unit address, use a tool to press and
hold the LOCK button for at least 10 seconds, and press
query the addresses.
Non-Programmable Controller (40VM900002)
—
When setting an address, connect only one wired
controller to an indoor unit.
Press ROOM TEMP and SWING simultaneously for 3
seconds. If there is no address for this indoor unit, the display
shows FE# 00 (see Fig. 36). Otherwise, the display shows the
current address of the indoor unit.
MODE
ROOM TEMP.
FAN
Fig. 36 — Non-Programmable Controller
(40VM900002) IDU Addressing Menu
21
AUTO
TEMP
COOL
SET
DRY
2 – FAN SPEED SETTING
CLOCK
SET
HEAT
HOUR
FAN
FAN SPEED
4 – ADJUST UP
FAN
MODE
6 – AIR DIRECTION
9 – CLOCK SETTING
10 – TIMER ON
SWING
AIR DIRECTION
CLOCK
11 – TIMER OFF
TIMER ON
SWING
OK
RESET
LOCK C/H
TIMER OFF
14 – OK (CONFIRM)
A40-1734
(40VM900001)
to select an address and press
TEMP. UP
ON/OFF
TIMER
SWING
OK
TEMP. DOWN
to send
to
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