SYSTEM OPERATION
26
Period
Timing
Pre-Purge
15 Seconds
Inter-Purge
30 Seconds
Post Purge
30 Seconds
Trial-for-Ignition (TFI)
7 Seconds
Flame Stabilization Period
10 Seconds
2 Seconds within Flame Stabilization Period
2 Seconds or Per ANSI Z21.20 Outside of Flame Stabilization Period
Low to High Stage Delay
Selectable 5 minutes or 10 minutes (Default = 10 minutes)
Heat ON Delay
30 Seconds
Heat OFF Delay
Selectable 90, 120, 150, or 180 Seconds
(Default = 150 Seconds)
High Stage Heat OFF Delay
30 Seconds
Cool ON Delay
6 Seconds
Cool OFF Delay
45 Seconds
Continuous Fan ON Delay
0 Seconds
Continuous Fan OFF Delay
0 Seconds
Ignition Attempts
3
Recycles
Infinite
Automatic Restart
60 Minutes
Pressure Switch Lockout Delay
5 Minutes
Factory Test Mode Active Time
2 Minutes Maximum
Flame Failure Response Time
Table 4: Control Timings
Color
Function
LED Flashes/Status
Normal
On
Intrnal/Gas Valve Fault
Off
Lockout
1
Pressure Switch Stuck Closed
2
Pressure Switch Stuck Open
3
Open High Temperature Limit
4
Flame Detected with Gas Valve De-Energized
5
Compressor Short Cycle Delay Active
6
Limit Opened 5 Times in Same Call For Heat
7
Indoor Thermostat/Outdoor Thermostat is Open
8
Pressure Switch/Loss of Charge Switch is Open
9
Normal Flame
On
No Flame Present
Off
Low Flame Current
1
Flame Detected with Gas Valve De-energized
2
Amber
Red
Table 5: LED Status Codes and Corresponding System Condition
