Heat Delay; Ignition Control Flash Codes; Vav Control Board Flash Codes - York ZS Series Installation Manual

518676-BIM-C-0610
Table 30: Heat Delay
Heat Heat
Red
Fan On Fan Off
LED 8
Delay Delay
60 180 On
60 90 On
60 60 On
60 30 On
45 180 On
45 90 On
45 60 On
45 30 On
30 180 Off
30 90 Off
30 60 Off
30 30 Off
0 60 Off
0 30 Off
0 10 Off
Non-std Non-std Off
Table 31: Ignition Control Flash Codes
Flashes Fault Conditions
STEADY ON Control Failure
HEARTBEAT Normal Operation
1 Not Applicable
Pressure Switch
2
Stuck Closed
Pressure Switch Failed
3
To Close
4 Limit Switch Open
Flame Present With Gas
Off First Stage Gas Valve
Energized With W1 Off
5 Second Stage Gas Valve
Energized With First
Stage
Gas Valve Off
6 Ignition Lockout
No Power Or Control
STEADY OFF
Failure
62
Red Red Red
LED 4 LED 2 LED 1
On On On
On On Off
On Off On
On Off Off
Off On On
Off On Off
Off Off On
Off Off Off
On On On
On On Off
On Off On
On Off Off
Off On On
Off On Off
Off Off On
Off Off Off
Check
Control
Pressure Switch
Venter Pressure Switch
Vent Blocked
Main Limit
AUX Limit
Gas Valve
Gas Flow
Gas Pressure
Gas Valve
Flame Sensor
24VAC or Control
Table 32: VAV Control Board Flash Codes
Flash Codes
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
Description
Johnson Controls Unitary Products