518676-BIM-C-0610
62
Johnson Controls Unitary Products
Table 30: Heat Delay
Heat
Fan On
Delay
Heat
Fan Off
Delay
Red
LED 8
Red
LED 4
Red
LED 2
Red
LED 1
60
180
On
On
On
On
60
90
On
On
On
Off
60
60
On
On
Off
On
60
30
On
On
Off
Off
45
180
On
Off
On
On
45
90
On
Off
On
Off
45
60
On
Off
Off
On
45
30
On
Off
Off
Off
30
180
Off
On
On
On
30
90
Off
On
On
Off
30
60
Off
On
Off
On
30
30
Off
On
Off
Off
0
60
Off
Off
On
On
0
30
Off
Off
On
Off
0
10
Off
Off
Off
On
Non-std
Non-std
Off
Off
Off
Off
Table 31: Ignition Control Flash Codes
Flashes
Fault Conditions
Check
STEADY ON
Control Failure
Control
HEARTBEAT
Normal Operation
1
Not Applicable
2
Pressure Switch
Stuck Closed
Pressure Switch
3
Pressure Switch Failed
To Close
Venter Pressure Switch
Vent Blocked
4
Limit Switch Open
Main Limit
AUX Limit
5
Flame Present With Gas
Off First Stage Gas Valve
Energized With W1 Off
Second Stage Gas Valve
Energized With First
Stage
Gas Valve Off
Gas Valve
6
Ignition Lockout
Gas Flow
Gas Pressure
Gas Valve
Flame Sensor
STEADY OFF
No Power Or Control
Failure
24VAC or Control
Table 32: VAV Control Board Flash Codes
Flash Codes
Description
On Steady
This is a Control Failure
1 Flash
Not Applicable
2 Flashes
Loss of Communications with UCB
3 Flashes
Space Sensor Failed
4 Flashes
SAT Sensor Failed
5 Flashes
RAT Sensor Failed
6 Flashes
OAT Sensor Failed
7 Flashes
OAH Sensor Failed
8 Flashes
RAH Sensor Failed
9 Flashes
IAQ Sensor Failed
10 Flashes
OAQ Sensor Failed
11 Flashes
APS Switch Failed
12 Flashes
Limit 2 Switch Open
13 Flashes
Purge
14 Flashes
VFD Input Failure
15 Flashes
Dirty Filter Switch
16 Flashes
Econ Minimum Position Alarm
17 Flashes
Space Temp/Time Alarm
18 Flashes
Water Coil Freeze Stat Alarm
19 Flashes
SAT Alarm for Cooling
20 Flashes
SAT Alarm for Heating
