Troubleshooting - ProFire PF2200-SB Product Manual

4.4

TROUBLESHOOTING

Problem
System has visible
flame but cannot detect
Card is unresponsive or
BMS card will not
communicate with User
Interface card
Ignition transformer
"clicks" but no visible
spark
Solenoids are not
turning on, or turning
on then over time turn
off
Digital input will not
energize
Diagnosis
1. Ensure pilot assembly, flame rod, and the gap between are fully
engulfed in flame. If not, adjust rod position
2. Ensure flame detection wiring does not exceed the recommended
maximum
3. Ensure burner assembly has a low impedance path to Ion- terminal of
BMS
4. For longer run lengths, ensure ignition cable is used to avoid ground-
loading
1. Ensure the Status LEDs for both cards are functioning. If status LED is
not functioning, cycle power (if safe to do so) and check again.
2. If status LED is still not functioning, attempt a firmware update of both
cards.
3. If firmware update fails, card is likely faulty.
1. Ensure all wires in the ignition path are properly terminated and that
there is a low impedance path from the primary-windings to the BMS
card as well as the secondary-windings to the ignition rod.
2. Ensure the gap between the ignition rod and the burner housing is
within the tolerances specified in this manual under PF2200 Declarations
section under "High Voltage Spark Gap Range". Often times there is
either excess buildup or the rod has drooped to compromise the gap
distance.
1. Ensure the solenoid is wired correctly and to the appropriate terminals.
To ensure proper solenoid wiring, a multi-meter in OHM mode
•
can be used to measure the resistance between the + and –
terminal of the associated output. Note: this measurement
should be done with the BMS card powered off.
If properly wired, the multi-meter should read a resistance of the
•
solenoid coil plus the run length (i.e. if the multimeter reads
open, there is likely a problem with wiring).
2. Ensure the PWM setting is correct for the appropriate solenoid.
If using a peak-and-hold solenoid, the appropriate PWM setting
•
can be found in the solenoid data sheet. Typically add a margin
of 5-10% to allow for temperature variance
If using a non-peak-and-hold solenoid, ensure the PWM setting is
•
set to 100%
1. Ensure the input is properly wired. See section 4 for Interfacing / Wiring
configurations.
Section 4: OPERATIONS and MAINTENANCE
V 4.0
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