Hired-Hand Universal Ray Tube Heaters: AG2 Series Rev.10-08 - Manual (Page 13)

Chart 3.1 • LED Fault Code Status (located internally on circuit board)
LED Code Fault Status Fault Code Delay*
Initial flash on power
up, then steady off
No fault, normal operation No delay
Steady ON Module failure / Internal fault No delay
1 flash Ignition failure 3 minutes
2 flashes
APS air flow fault
NOTE: Fan / Intake / Exhaust
1-30 seconds
4 flashes Erroneous flame signal No delay
No flash on 117V startup Transformer fault No delay
*Some flash codes have a time delay before the LED will flash.
13
3.0 Operation • Diagnostics
AG2 Series
Diagnostics
Lockout:
The control will automatically lockout the unit when an external or system fault occurs. There are two
types of lockout:
Soft Lockout: The heater will attempt to light three times. In the event of a failed attempt to light, (APS
air flow, valve, no flame sense etc.), the heater will enter a soft lockout period for 30
minutes and then attempt to light three more times before entering Hard Lockout mode.
Hard Lockout: If proof of flame is not established, a component failure occurs or blockages are evident,
the heater will enter hard lockout. If lockout occurs, the control can be reset by briefly
interrupting the power source. Refer to Chart 3.1 below for a description of fault codes.
Figure 3.1 • Operational Indicator Lights
Light 1(amber)
Indicates High
Fire Mode
Light 2 (amber)
Indicates Low
Fire Mode
Light 3 (green)
Indicates Pressure
Switch Closes
Operational Indicator Lights