57
®
F56
Oxygen probe purge
check
The measured value from the oxygen probe was less than 18.0% at the end of
pre-purge. Trim is disabled.
Subset: Oxygen level x 10
F57
Auto trim commis-
sioning fault
The measured oxygen level exceeded 15.0% during auto trim commissioning.
The burner is shutdown.
Subset: Last auto trim commission setpoint
L58
Flue temperature low
alarm value exceeded
The measured flue temperature is below the low alarm value for the current
profile, or the flue thermocouple is faulty.
L59
Flue temperature high
alarm value exceeded
The measured flue temperature has exceeded the high alarm value for the cur-
rent profile.
L/
F60
Remove unit fault
The communication from the remote unit is faulty.
• Check wiring between units
• Check supply to remote unit
• Check fuse in remote unit
•Check IC11 (CU 221616) is correct with all pins inserted into the socket
Subset: 1 = ESP not responding, >1 = contact supplier
F61
Var. speed incorrect
position
A drive positioning fault has occurred, which will cause a non-volatile lockout
of the burner. This fault has occurred for one of the following reasons:
• During close position prove, when a drive stops at a position which is out-
side the close set position by more than five degrees.
F62
Aux. damper position
fault
• During purge position prove, when a drive stops at a position which is out-
side the purge set position by more than five degrees.
• During pre-purge, ignition or post-purge, when a drive moves from its set-
point.
• During modulation, when a drive is not at its correct setpoint as defined by
the commissioned fuel/air ratio for the selected profile.
• Reference error on expansion unit or communications error (L60) between
units.
A drive is defined as having moved from its setpoint if its positional error is
more than 1° for 15s, or more than 5°þfor 1s. For positional errors between
1° and 5°, the detection time is variable between 15s and 1s.
Inverter error tolerance during modulation is defined by option parameter
14.6.
Frequent positioning faults are usually caused by one of the following prob-
lems:
• Worn, dirty or unsuitable (e.g. wire-wound) potentiometers used for servo-
motors feedback.
• Unsuitable lead drive selection - two adjacent profile points having a small
change in lead drive position and a large change by a non-lead drive.
Note: Only the selected fuel motor and the are damper motor are checked. The
other fuel motor is ignored.
Subset: Burner status
F63
Var. speed drive ille-
gal speed
The specified drive is outside the allowable speed range of 10s/90° to 60s/
90°.
If the drive is an inverted, adjust the acceleration and deceleration times
accordingly.
Before the pre-purge starts, all required drives are moved from their lowest
positions (closed set points) to their highest positions (purge setpoints).
F64
Aux. damper drive
illegal speed
During this time, a speed measurement is made for each drive.
These faults will occur if a drive is outside the allowable speed range of 10s/
90° to 60s/90°.
• Is the POT SUPPLY link set for the correct voltage.
• Is the wiring correct?
• Has the triac output failed?
Subset: measured speed (s/90°).
F65
Inverter generated
fault
Fault generated from auxiliary input on expansion unit (PL4), no non-volatile
lockout.
NO
LED
A B C D E F G
NAME
DESCRIPTION
= LED ON
= LED OFF
