51
are operational problems. This is not a complete list. Along with
each of the Fault and Alert messages described there will be a list
of possible causes and things to check and repair.
Only qualied service technician, as dened in Qualications using
appropriate test equipment, should perform any service procedures
on the water heater.
NOTE: If you are not qualied and licensed or certied as required
by the authority having jurisdiction to perform a given task do not
attempt to perform any of the diagnostic or service procedures
described in the following section.
If you do not understand the instructions in the following section do
not attempt to perform any procedures.
Call the technical support phone number listed on the back cover of
this manual for further technical assistance or to locate a qualied
service technician in your area.
FAULT AND ALERT CONDITIONS
FAULT CONDITIONS
When the control system declares a Fault condition it will display a
Fault message on the control system's LCD with an exclamation "!"
mark. The control system will lock out and disable heating operation
until the condition is corrected. The water heater must be serviced
by a qualied service technician before operation can be restored.
ALERT CONDITIONS
When the control system declares an Alert condition it will display
an Alert message on the control system's LCD with a question "?"
mark. The water heater will continue to operate during an Alert
condition but the water heater must be serviced by a qualied
service technician as soon as possible.
RESETTING CONTROL SYSTEM LOCK OUTS
To reset the control system from a lock out condition; turn the Enable/
Disable switch at the base of the unit to the “Disable” position for
approximately 20 seconds and then back to the “Enable” position.
Keep in mind: if the condition that caused the Fault has not been
corrected, the control system will continue to lock out.
DIAGNOSTIC CHECKS
Turn off power to the water heater
before performing any service.
Electrical Shock Hazard
•
Label all wires prior to disconnecting
when performing service. Wiring errors
can cause improper and dangerous
operation.
•
Verify proper operation after servicing.
•
Failure to follow these instructions can
result in personal injury or death.
•
The following section, Fault And Alert Messages lists some of the
messages the control system will display on the LCD when there
FAULT AND ALERT MESSAGES
Call the technical support phone number listed on the back cover for further technical assistance or to locate a qualied service technician
in your area.
POSSIBLE CAUSES - CHECK/REPAIR DISPLAYED FAULT/ALERT MESSAGE
• Using a manometer, ensure that gas supply pressure is above
minimum requirement listed on heater’s data plate and does not
drop more than 1.5” W.C. when unit res.
• Ensure wire connections to gas control valve are clean and tight.
• Ensure wire connections to ame sensor are clean and tight.
• Ensure wire connections to spark igniter are clean and tight.
• Inspect ame sensor, clean/replace as needed.
• Inspect spark igniter, realign igniter gap as needed
• Ensure adequate electrical ground to heater.
ADVANCEDBACK
0 days 0 hrs 0 mins ago
Error Code: B2-70
Flame not detcted. Clean flame
rod. Check gas supply.
Press the Advanced button for
more information
• If Blocked Exhaust error occurs when blower is running, check for
restrictions in exhaust pipe, including exhaust elbow, condensate
drain, and outside termination. Also check exhaust pipe installation
(size/length) per manual.
• If Blocked Exhaust error occurs before blower runs, make sure
pressure switch connections are clean and tight. Check pressure
switch continuity/resistance. Switch should be closed (continuity/0
ohms). Replace switch if open (no continuity).
• High wind conditions may be another possible cause.
ADVANCEDBACK
0 days 0 hr 0 min ago
Error Code: A8-1201
Restriction in exhaust pipe.
Check exhaust pipe and
termination for blockage.
Press the Advanced button for
To Next Page
Loading...
Need help?
General
