TM 9-2540-207-14&P
F-2
Model A-20 Hunter Heater
Hunter Thermoelectric Inc.
OPERATING MODES
00
SHUTDOWN
P
U
R
G
E
M
O
D
E
01
SELF CHECK
02
IGNITOR
O
N
03
DELIVER
F
U
E
L
04
IGNITOR OFF
05
FULL HEAT RAMP
06
ENTER RUN MODE
07
LOW HEAT MODE
14
HIGH HEAT MODE
99
VENT ONLY
COMPONENT FAILURE
C1
IGNITOR FAILURE
C2
IGNITOR SHORT
C3
VENT FAN FAULT
C4
BURNER FAN FAULT
C5
BURNER SENSOR FAULT
C6
VENT SENSOR FAULT
C7
FUEL PRESSURE SENSOR FAULT
C8
CONTROLLER FAULT
C9
FUEL PUMP FAULT
CA
FUEL INJECTOR FAULT
ERRORS
E1
LOW VOLTAGE
E2
LOW FUEL PRESSURE
E3
LOW BURNER AIR FLOW
E4
REVERSE BURNER AIR FLOW
E5
INLET OVER PRESSURE
E6
OVER VOLTAGE
FAULTS
F1
IGNITION OVERTIME
F2
BURNER FLAMEOUT
F3
HEAT LIMIT
F4
VENT AIR OVERHEAT
F5
OVER CURRENT
F6
INLET OVERHEAT
F7
EXHAUST OVERHEAT
F8
IGNITION FLAME OUT
DATA CODES
D1
OPERATION HOURS
D2
NUMBER OF STARTS
D3
VERSION LEVEL
Figure F- 4. Diagnostic Codes Label
Diagnostic
Code