Johnson Controls RC Series Engineering Manual page 43

Wiring Schematics cont.
Microprocessor - with ECM Motor Electric Heat and Remote Stat
Normal Mode Control Timing Table
Fan off delay
Compressor on delay
Compressor short cycle delay
Minimum compressor on time
High pressure fault recognition delay
Low pressure fault recognition delay
Freeze sensing fault recognition delay
Condensate overflow fault recognition delay
Low pressure fault bypass delay
Freeze sensing fault bypass delay
Power on delay
Test Mode Control Timing Table
Fan off delay
Compressor on delay
Compressor short cycle delay
Minimum compressor on time
High pressure fault recognition delay
Low pressure fault recognition delay
Freeze sensing fault recognition delay
Condensate overflow fault recognition delay
Low pressure fault bypass delay
Freeze sensing fault bypass delay
Power on delay
Fault off time
Logic Board DIP Switch Settings
Switch OFF
Test Mode - Selected timings sped up to facilitate
SW1 - 1
Normal Mode - Standard timings
troubleshooting
SW1 - 2
Loop - Closed loop freeze sensing setting (15F) Well - Open loop freeze sensing setting (30F)
Commercial - Enables NS features when TA32U02
SW1 - 3
Normal - Standard thermostat operation
thermostat is used
IO Display* - Enables Input/Output display on
SW1 - 4
Normal* - Unit status display
external LED board*
Split Mode – Dual-Speed-Compressor and with No
SW1 - 5
Normal - Single-Speed Compressor with Fan
Fan
ON* - Current fault or Output display mode
SW2
OFF* - Normal or Input display mode activated
activated
* Refer to LED Display Mode table for position of SW1-4 and SW2
LED Display Mode Table
LED Normal Display Mode
SW1-4 On, SW2 Off
Drain Drain pan overflow lockout
Water Flow FS thermistor (loop<=15°F, well<=30°F) lockout
High Press High pressure lockout
Low Press Low pressure lockout
Air Flow Not used
Status Microprocessor malfunction*
DHW Limit Not Used
HWD SW2 status (Off=down position,On=up position)
Diagnostic Modes
LED Current Fault Status
SW1-4 On, SW2 On
Drain Drain pan overflow
Water Flow FS thermistor (loop<=15°F, well<=30°F)
High Press High pressure
Low pressure
Low Press
Air Flow Not used
Status Not used
DHW Limit Not used
HWD SW2 in the On position
*Flashing Status light indicates microprocessor is functioning properly. Solid "on" indicates a
microprocessor malfunction.
Single-Speed Operational Logic Table
Mode Inputs Fan Comp
Htg Y ON ON
Clg Y,O ON ON
Fan G ON OFF
Dual-Speed Operational Logic Table
Mode Inputs Comp Low Comp High
Low Speed Htg Y ON
High Speed Htg Y,G ON
Low Speed Clg Y,O ON
High Speed Clg Y,G,O ON
43
RC SERIES ENGINEERING GUIDE
30 seconds
10 seconds
5 minutes
2 minutes (except for fault condition)
Less than 1 second
30 seconds
30 seconds
30 seconds
2 minutes (for first fault only, 0 sec after)
2 minutes (for first fault only, 0 sec after)
5 minutes
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
15 seconds
5 minutes
ON
Inputs Outputs
SW1-4 Off, SW2 Off SW1-4 Off, SW2 On
Y Compressor
G Fan
O O
ES ES
NS NS
LS LS
Not Used Not Used
SW2 in the Off position SW2 in the On position
RV
OFF
ON
OFF
RV
OFF OFF
ON OFF
OFF ON
ON ON
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