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
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