Evo HW 79 - Hard Lockout Codes; Soft Lockout Codes

34000 Autry Street, Livonia, MI 48150 • 800.968.5530 • Fax 734.419.0209 • www.hamiltonengineering.com • LIT91127 REV 3/09
SERVICING
C. SOFT LOCKOUT CODES
(TABLE 7-1) FMT 914 SOFT LOCKOUT CODES
DESCRIPTION
DISPLAY
CODE
WILL AUTOMATICALLY

Low water cut off (if equipped) opened A1 The water level is restored
Manual reset high limit or low gas pressure switch (if
equipped) opened
A1 Must reset manually on safety control
Outlet temperature too high A2 Outlet temp decreases sufciently
External sensor temperature too high A3 The temp decreases sufciently
Indirect DHW temperature too high A4 DHW temp decreases sufciently
Too many on off cycles A5
After control keeps appliance off for two
minutes
Fan speed too high A6
Fan speed is OK within 1 minute. If not,
it will become a Hard Lock Out
Fan speed too low A7
Fan speed is OK within 1 minute. If not,
it will become a Hard Lock Out
Anti-scale setting exceeded A8 The temp is less than the setting
Flame simulation C1 No ame is measured
If the appliance is shut down for any reason other than the operating setpoint, a Soft Lockout Code is displayed in the
Temperature Display. If the Code is not ashing, the codes reference the above information.
Note: F2 will equal improper gas pressure on a CSD-1 equipped model.
D. HARD LOCKOUT CODES
(TABLE 7-2) FMT 914 SOFT LOCKOUT CODES
DESCRIPTION
DISPLAY
CODE
ACTION TO RESET
Flame signal without ame F0 Reset button
Wrong fan speed indicated F4 Reset button
No ame after 4 tried for ignition F5 Reset button
Flame lost (4 times) during a burn cycle F6 Reset button
Outlet sensor short/interrupted E0 Reset button
Inlet sensor short/interrupted E2 Reset button
External sensor short/interrupted E5 Reset button
Anti-scale setting exceeded 3 times during burn cycle E6 Reset button
Parameters programmed PP Reset button
Parameters programmed incorrectly PE Reset button
FMT 914 burner controller is out of order Nc Re-program / Disconnect power
Water ow switch, pressure switch, or the High Limit opened H1 Reset button
No lag control is communicating in Cascade
nc.
(with dot)
Restore RS-485 Wiring
If the appliance is shut down for any reason other than the operating setpoint and there is a Fault Code displayed
in the Temperature Display and the display is ashing a Code, the code references the above information.
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