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SPECTRA COMMERCIAL AND RESIDENTIAL INSTALLATION GUIDE
Condensate Drain - In areas where airborn bacteria produce a slime in the drain pan, it
may be necessary to treat chemically to minimize the problem. The condensate drain can
pick up lint and dirt, especially with dirty filters. Inspect twice a year to avoid the possibility of
overflow.
Air Coil - The air coil must be cleaned to obtain maximum performance. Check once a
year under normal operating conditions and, if dirty, brush or vacuum clean. Care must be
taken not to damage the aluminum fins while cleaning.
CAUTION: Fin edges are sharp.
Desuperheater Coils - See Water Coil Maintenanc, page 18.
CONTROLS
Commercial Microprocessor
To check the unit control board for proper operation:
1) Place control board into “Diagnostics-inputs” mode (see Schematic page 14 and 15).
Place Switch #1 in “Test” mode. Remember to place Switch #1 back to “Normal” mode
before leaving.
2) Adjust thermostat to “Call” for heating or cooling.
3) Check LEDs for proper operation.
4) If LEDs indicate proper operation of thermostat, check “Diagnostics-Outputs”.
5) If LEDs are not indicating proper operation, remove thermostat connections.
• Jumper desired test input (Y, O, G) to “R” to simulate a thermostat signal.
• Check operation with “Diagnostics-input” mode.
• Check thermostat and field control wiring.
• If steps above show that the unit control board is not indicating proper results
(i.e. LED indication), replace board.
• If LEDs are indicating properly, replace thermostat.
6) Do not replace unit control board or thermostat until all diagnostic checks
have been made.
Residential Electromechanical
The compressor control module has a test mode that resets all timed delays to seconds
in duration. Simply ground the 1/4" spade connector labeled "test" to initiate test mode.
REFRIGERANT SYSTEM
To maintain sealed circuit integrity do not install service gauges unless unit operation
appears abnormal. Reference the operating chart on the page 13.
Verify that air and water flow rates are at proper levels before servicing the refriger
ant circuit.
Obtaining Parts
When contacting WaterFurance International for service or replacement parts, refer to
the model number and serial number of the unit as stamped on the serial plate attached to
the unit. If replacement parts are required, mention the date of installation of the unit and the
date of failure, along with an explanation of the malfunctions and a description of the
replacement parts required.
In-Warranty Material Return
Material may not be returned except by permission of authorized WFI service personnel.
Contact your local distributor or the WFI service department for warranty return authorization
and assistance.
Troubleshooting
Replacement
Procedures
