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21
Operating the Temperature Control System
Figure 24: Status Codes
ON
OFF
STATUS
A
B
C
•
•
VE
RY
HOT
HOT
LOW
VAC
Status
Light
Water Temperature Adjustment
The water temperature setting can be adjusted from 70°F
to 160°F. Turn the Gas Control/Temperature Knob to the
desired setting/temperature.
Operating Modes and Settings
• Standard Mode - The controller adjusts the water
heater to maintain the temperature set by the user.
• Vacation Setting - The Vacation Setting (VAC) sets
the controller at approximately 70°F. This setting is
recommended when the water heater is not in use for a
long period of time. This effectively turns the controller
temperature setting down to a temperature that
prevents the water in the water heater from freezing
while still conserving energy.
Status Light Code
Table 6
LED FLASH SEQUENCE CONTROL STATUS
Short flash once every four second IDLE (No call for heat, no fault conditions)
“Heartbeat”, alternates bright/dim Call for Heat (No fault conditions)
One Flash, three second pause Low Flame Signal (control continues to operate)
Two Flash, three second pause End Switch Failed Closed
Three Flash, three second pause End Switch Failed Open or TCO Limit Lockout
Four Flash, three second pause ECO Limit Lockout
Five Flash, three second pause Flame Out of Sequence
Six-One Flash, three second pause Soft Lockout - Retry Limit - Failed TFI
Six-Two Flash, three second pause Soft Lockout - Recycle Limit - Flame Lost - END Switch Fails
Six-Three Flash, three second pause Soft Lockout - Recycle Limit - Flame Lost
Six-Four Flash, three second pause Soft Lockout - Flame out of Sequence Sensed
Seven Flash, three second pause Flammable Vapor Sensor (FVS) Lockout
Eight-One Flash, three second pause Flammable Vapor Sensor (FVS) Fault Detected
Eight-Two Flash, three second pause Temperature Sensor Fault Detected
Eight-Three Flash, three second pause Electronic Fault Detected
Eight-Four Flash, three second pause Gas Control Valve/Thermostat Fault Detected