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ENVISION CONSOLE INSTALLATION MANUAL
Operational Logic Table
Mode
Htg
Clg
Inputs Fan Comp RV
Y
Y,O
Fan G ON
ON
ON
OFF
ON
ON
OFF
ON
OFF
SW1 - #4 On, SW2 Off
Drain pan overflow lockout
FS thermistor (loop<15°F, well <30°F) lockout
High pressure>600 PSI lockout
Low pressure < 40 PSI lockout
Not used
Microprocessor malfunction*
Not Used
SW2 status (Off=down position,On=up position)
Drain
Water Flow
High Press
Low Press
Air Flow
Status
DHW Limit
HWD
LED Normal Display Mode
SW1- #4 On, SW2 On
Drain pan overflow
FS thermistor (loop
<15°F, well<30°F)
High pressure >600 PSI
Low pressure < 40 PSI
Not used
Not used
Not used
SW2 in the On position
Current Fault Status
SW1-#4 Off, SW2 Off
Y
G
O
ES
NS
LS
Not Used
Off position
Inputs
Compressor
FAN
O
ES
NS
LS
Not Used
On position
Outputs
Diagnostic Modes
SW1-#4 Off, SW2 On
Drain
Water Flow
High Press
Low Press
Air Flow
Status
DHW Limit
HWD
LED
LED Display Mode Table
CC Relay
Fan Relay
CC
CCG
C
C
R
R
FAN FANCOM
R C Y O G LO ES NS LS
P3
P1
SW1
Microprocessor
Logic Control
17P529A01
P2
6
1
7
2
8
3
9
4
10
5
Versatec Logic Board Physical Layout
Switch OFF ON
SW1 - 1
SW1 - 2
SW1 - 3
SW1 - 4
SW1 - 5
SW2
Test - Selected timings sped up to facilitate
troubleshooting
Loop - Closed loop freeze sensing setting (15°F)
IO Display * - Enables Input/Output display on external
LED board*
Enables NS features
Motorized Valve - 1.5 minute compressor on delay
OFF * - Normal or Input display mode activated
ON * - Current fault or Output display
mode activated
Normal - Standard timings
Well - Open loop freeze sensing setting (30°F)
Normal * - Unit status display
Normal - Standard thermostat operation
Normal - Standard delay on call from
compressor used
*Refer to LED Display Mode table for position of SW1-4 and SW2
Logic Board DIP Switch Settings
Normal Control Timing Table
Blower off delay
Compressor on delay
Short cycle delay
Minimum compressor on time
High pressure fault recognition delay
Low pressure fault recognition delay
Condensate overflow fault recognition delay
Low pressure fault bypass delay
Freeze sensing fault bypass delay
Motorized valve delay
Random start delay
Freeze sensing fault recognition delay
30 seconds
10 seconds
5 minutes
60 seconds (except for fault condition )
Less than 1 second
30 seconds
30 seconds
30 seconds
2 minutes
2 minutes
90 seconds
0 -25 seconds
Test Control Timing Table
Blower off delay
Compressor on delay
Short cycle delay
Minimum compressor on time
High pressure fault recognition delay
Low pressure fault recognition delay
Condensate overflow fault recognition delay
Low pressure fault bypass delay
Freeze sensing fault bypass delay
Motorized valve delay
Random start delay
Freeze sensing fault recognition delay
5 seconds
2 seconds
15 seconds
5 seconds (except for fault condition )
Less than 1 second
30 seconds
30 seconds
30 seconds
0 seconds
0 seconds
90 seconds
0 seconds
*Flashing Status light indicates microprocessor is functioning properly. Solid "on" indicates a
microprocessor malfunction.
Wiring Schematic
208-230-265/60/1VERSATEC CONTROL - EH & REMOTE WALL THERMOSTAT
Legend for Schematic [A]