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NOTE: Cooling always overrides Reheat mode. In the Cooling
mode, the unit cools and dehumidifies. If the cooling thermo-
stat is satisfied but there is still a call for dehumidification, the
unit will continue to operate in Reheat mode.
COMPLETE C AND DELUXE D BOARD
SYSTEM TEST
Test mode provides the ability to check the control opera-
tion in a timely manner. The control enters a 20-minute test
mode by momentarily shorting the test terminals. All time de-
lays are sped up 15 times. The follow operations are common
to both Complete C and Deluxe D controls.
In Retry mode, the staus LED will flash
Retry Mode —
the code for the corresponding fault. If the fault clears and ther
thermostat call (Y) is still present the Complete C or Deluxe D
controller will run the compressor once the ASC (anti-short cy-
cle) timer has expired and will try to satisfy the call. If the call
is satisfied the unit will resume its normal operation.
If 2 or 4 consecutive faults occur (depending on the DIP
switch setting) within 1 hour, the controller will lock the com-
pressor operation out and will flash the alarm code on the status
LED as well as alarm dry contact output. When the Complete
C or Deluxe D controller enters lockout mode the alarm will
also be shown on the panel mounted LED.
LED Fault Indication —
vided. The GREEN power LED indicates 18-30 VAC present
at the board.
The RED LED is a fault indicator with blink codes as follows:
• One Blink = High pressure lockout
• Two Blinks = Low pressure lockout
• Three Blinks = Freeze sensor lockout
• Four Blinks = Condensate overflow
• Five Blinks = Brownout
Board Default Settings —
the factory with the following default settings:
• Freeze — "Terminals not jumped" on all the time
• Temp — 30 F
• Lockout — 2
• Reset — Y
• Alarm — PULSE
• Test — NO
• Dry Contact — Normally Open (NO)
SERVICE
Perform the procedures outlined below periodically, as
indicated. An annual "checkup" is recommended by a licensed
refrigeration mechanic. Recording the performance measure-
ments of volts, amps, and water temperature differences (both
heating and cooling) is recommended. This data should be
compared to the information on the unit's data plate and the
data taken at the original start-up of the equipment.
Periodic lockouts almost always are caused by air or water
flow problems. The lockout (shutdown) of the unit is a normal
protective measure in the design of the equipment. If continual
lockouts occur call a mechanic immediately and have them
check for: water flow problems, water temperature problems,
airflow problems or air temperature problems. Use of the pres-
sure and temperature charts for the unit may be required to
properly determine the cause.
WARNING
To prevent injury or death due to electrical shock or contact
with moving parts, open unit disconnect switch before ser-
vicing unit.
Two LED indicators are pro-
The board will come from
IMPORTANT: When a compressor is removed from this
unit, system refrigerant circuit oil will remain in the com-
pressor. To avoid leakage of compressor oil, the refrigerant
lines of the compressor must be sealed after it is removed.
IMPORTANT: All refrigerant discharged from this unit
must be recovered without exception. Technicians must fol-
low industry accepted guidelines and all local, state and fed-
eral statutes for the recovery and disposal of refrigerants.
IMPORTANT: To avoid the release of refrigerant into the
atmosphere, the refrigerant circuit of this unit must only be
serviced by technicians who meet local, state and federal
proficiency requirements.
Filter changes or cleanings are required at regular
Filters —
intervals. The time period between filter changes will depend
upon type of environment the equipment is used in. In a single
family home, that is not under construction, changing or clean-
ing the filter every 60 days may be sufficient. In other applica-
tions such as motels, where daily vacuuming produces a large
amount of lint, filter changes may be need to be as frequent as
biweekly. See Fig. 1-3 for replacement filter sizes. Note that
horizontal units containing two filters are taped together at the
factory to facilitate removal. This should be done by end user
as new filters are installed..
IMPORTANT: Units should never be operated without
a filter.
Keep all air out of the water coil. Check
Water Coil —
open loop systems to be sure the well head is not allowing air
to infiltrate the water line. Always keep lines airtight.
Inspect heat exchangers regularly, and clean more frequent-
ly if the unit is located in a "dirty" environment. Keep the heat
exchanger full of water at all times. Open loop systems should
have an inverted P trap placed in the discharge line to keep
water in the heat exchanger during off cycles. Closed loop
systems must have a minimum of 15 psig during the summer
and 40 psig during the winter.
Check P trap frequently for proper operation.
To avoid fouled machinery and extensive unit clean-up,
DO NOT operate units without filters in place. DO NOT
use equipment as a temporary heat source during
construction.
Condensate Drain Pans —
should be checked annually by cleaning and flushing to ensure
proper drainage.
Refrigerant System —
are at proper levels before servicing. To maintain sealed circuit-
ry integrity, do not install service gages unless unit operation
appears abnormal.
Check to see that unit is within acceptable superheat and
subcooling temperature range. If the unit is not within these
ranges, recover and reweigh in refrigerant charge.
Conduct annual amperage checks to en-
Compressor —
sure that amp draw is no more than 10% greater than indicated
on the serial plate data.
All units have lubricated fan motors. Fan
Fan Motors —
motors should never be lubricated unless obvious, dry
operation is suspected. Periodic maintenance oiling is NOT
recommended as it will result in dirt accumulating in the excess
29
CAUTION
The
condensate
Verify air and water flow rates
drain
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