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WSV6 VERTICAL SERIES - IOM
WSV6 Vertical Series – IOM 31
CONTROLS CONTINUED
WSCM CONTROL MODULE
CONTROL FEATURES
 Anti-short Cycle Protection
 Random Start
 High and low Pressure Cut-out
 Water Coil Low Temperature Cut-out
 Over/Under Voltage Protection
 Fault Retry
 Lockout with Soft and Hard Reset
 Condensate Overflow Sensor
 Diagnostic LED Display
 Test Mode
 Alarm Relay
 Accessory Relays
 Vacated Mode
 Extended Compressor Operating Monitoring
MOTOR SPEED OPERATION
An ECM blower can be driven directly from the WSCM
control module. The control of the motor is based off the
input signals of G, Y1, and O. The blower speed is
automatically controlled via the WSCM module.
MOTOR SPEED OPERATION
Unit Call
Fan Speed
G
G2
Y
G3
Y,O,G
G2, then G3 after
10min of run time
Table 12 – Motor Speed Operation ECM
A secondary heat exchanger (plate frame between the unit
and the open cooling tower) may also be used. It is
imperative that all air is eliminated from the closed loop
side of the heat exchanger to prevent condenser fouling.
FIELD CONTROLLABLE FUNCTIONS
TEST MODE
The unit can be placed into test mode by shorting the test
pins on the WSCM module. Once the pins are shorted, the
WSCM module will enter a test mode period in which all
time delays are sped up 15 times. While in test mode the
yellow LED2 will light up yellow. Faults stored in memory
can be cleared by entering into test mode and exiting the
test mode, or by a hard reset. Test mode can be exited by
shorting the test pins for approximately 3 seconds.

Test mode will be automatically exited after a 10 minute
period.

During test mode, the control will monitor to see if CO1
and CO2 freeze thermistors are present and correctly. The
controls will indicate fault code 19 if CO1 or CO2 are open,
or if there is a jumper connecting across the free sensors
terminals.
VACATED PREMISES CONTROL

Optional Vacated Premise Kit option must be installed to
operate in this mode.
The vacated premises operation is designed for extended
periods of un-occupancy when the occupant wants the
heat pump to operate in cooling mode for a predetermined
cycle time to help control indoor air conditions. See Dip 1.7
for time selection (1 or 2 hours).
Additionally, the mode will store all faults seen over 24
hours in memory. If the same fault occurs for 4 consecutive
days, the unit will go into a hard lockout.
The control kit consist of a rocker switch, wiring and a
programmed chip that is installed on the WSCM module by
a licensed contractor.