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START-UP
Pre-Start Check —
Once installation is complete, make
the following pre-start checks:
1. All indoor and outdoor units are properly installed.
2. All piping and insulation is complete.
3. All electrical connections (both power and control) are
properly terminated.
4. All condensate drains are installed correctly.
5. The power supply is of the right voltage and frequency.
6. The units are properly grounded in accordance with cur-
rent electrical codes.
7. Suction and liquid line service valves are in the open
position.
System Operation Check —
and pre-start checks are completed, follow these steps:
1. Using remote controller, select cooling or heating mode
to check the operation of the system.
2. While the system is in operation, check the following on
indoor unit:
a. Switches or buttons on remote controller are easy to
push.
b. Indicator light is showing normal operation and no er-
ror is indicated.
c. Swing mode of air louvers is working (if applicable to
unit).
d. Drain pump operation is normal (if applicable).
e. No abnormal vibration or noise is noticed.
3. While the system is in operation, check the following on
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 er-
ror is indicated.
NOTE: If unit is turned off or restarted, there is a 3 minute time
delay for the compressor to start from the time power is
restored.
Once the installation
9
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 air filter condition. Clean or replace if necessary.
EVERY 6 MONTHS — Follow 3-month maintenance sched-
ule. In addition:
• Clean condensate tray with suitable cleaning agent.
• Clean the grille and panel.
EVERY 12 MONTHS — Follow 6-month maintenance
schedule. In addition:
• Be sure all electrical connections are secure.
• Check condensate pump operation.
• Check heating and cooling action for proper operation.
TROUBLESHOOTING
Figure 13 shows an LED display panel for the 40WAW007-
018 units. See Table 3 for a summary of display indicators. Ta-
ble 4 lists problems, possible causes, and possible solutions.
OPERATION
40WAW007-018
Fig. 13 — 40WAW LED Display Panel
TIMER
A40-1919
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