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35
Integrated Staging Control (ISC) Board
Fig. 43 — Integrated Staging Control (ISC) Board
NOTES:
1. Green LED Blinking at 1HZ indicates normal operation.
2. Solid red LED indicates an error exists, see above LED configuration.
DDC
Control
Indoor Fan
“On” Status
IGC
Board
Power
Plug
Phase
Monitor
Relay
Auxilary
Shutdown
Condensate
Overflow
Economizer
Occupancy
Status Code LEDs
Thermostat
DDC
Control
Remote
Shutdown
Smoke
Shutdown
Smoke
Alarm
Low Ambient
Outdoor Fan
Control
Compressors
Reheat
Low-Pressure
Switch
High-Pressure
Switch
Indoor Fan
Motor
Outdoor Fan
Motors
Phase
Monitor
Relay
Table 15 — Status Code Descriptions for ISC Board LEDs
ERROR #
ERROR NAME
LED INDICATION
LED01
LED02
LED03
LED04
LED05
1
Check Smoke Detector/PMR/AUX
RED
Blinking
Green
LED
(Note 1)
2
Check HPS/LPS/COFS
RED
RED
3
Call for Y3 with no call for Y1. Check Y1 wiring.
RED
4
Call for Y3 with no call for Y1/Y2. Check Y1 wiring.
RED
RED
5
Call for Y2 with no call for Y1. Check Y1 wiring.
RED
RED
6
Call for W2 with no call for W1. Check W1 wiring.
RED
RED
7
Call for heat (W1/W2) and cooling (Y1/Y2/Y3). Check thermostat wiring.
RED
RED
RED
RED
8
Call for heat (W1/W2) with no IFM. Check G wiring.
RED
RED
RED
9
Call for cooling (Y1/Y2/Y3) with no G. Check G wiring.
RED
RED
RED
10
Call for heat (W1/W2) and cooling (Y1/Y2/Y3) with no G.
Check thermostat and G wiring.
RED
RED
RED
11
Check ISC Board and the thermostat wiring.
RED
RED
RED
12
Call for Economizer Y1 Feedback (ECON) from economizer with no call for Y1 from
thermostat. Check thermostat and economizer wiring.
RED
13
Check ISC Board and the thermostat wiring.
RED
RED
14
Check ISC Board and the thermostat wiring.
RED
15
Check ISC Board and the thermostat wiring.
RED
RED