Benchmark Platinum-Edge: Operation-Service Manual
SECTION 6 – TROUBLESHOOTING
OMM-0137_D • GF-211
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7/16/2019
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TABLE 10-1: Boiler Troubleshooting Procedures
Fault
Probable Causes
Corrective Action
AIRFLOW
FAULT
DURING
PURGE
1.
Blower not running or running too slow.
1.
Start the unit. If the blower does not run check the blower solid state
relay for input and output voltage. If the relay is OK, check the
blower.
2.
Defective Blocked Inlet switch.
2.
Start the unit. If the blower runs, turn off unit and check the Blocked
Inlet switch for continuity. Replace the switch if continuity does not
exist.
3.
Blockage in air filter or Blocked Inlet switch.
3.
Remove the air filter and Blocked Inlet switch and inspect for signs
of blockage. Clean or replace as necessary.
4.
Blocked blower inlet or inlet ductwork.
4.
Inspect the inlet to the combustion blower including any ductwork
leading up to the combustion blower for signs of blockage.
5.
No voltage to Blocked Inlet switch from Edge
Controller.
5.
During the start sequence, verify that 24 VAC is present between
each side of the switch and ground. If 24 VAC is not present, refer
fault to qualified service personnel.
6.
PROBABLE CAUSES from 3 to 12 for
AIRFLOW FAULT DURING IGNITION apply for
this fault.
6.
See CORRECTIVE ACTIONS for AIRFLOW FAULT DURING
IGNITION, items 3 to 12.
7.
Missing or improperly connected Blocked Flue
jumper.
7.
Check auxiliary box to be sure Blocked Flue input is jumpered and
properly connected.
AIRFLOW
FAULT
DURING RUN
1.
Blower stopped running due to thermal or
current overload.
1.
Check blower for signs of excessive heat or high current draw that
may trip thermal or current overload devices.
2.
Blocked Blower inlet or inlet ductwork.
2.
Inspect the inlet to the blower, including any ductwork leading up to
the combustion blower, for signs of blockage.
3.
Blockage in air filter or Blocked Inlet switch.
3.
Remove the air filter and Blocked Inlet switch and inspect for signs
of blockage, clean or replace as necessary.
4.
Defective Blocked Inlet switch.
4.
Verify that 24 VAC is present between each side of the switch and
ground. If 24 VAC is not present at both sides, replace switch.
5.
Combustion oscillations.
5.
Run unit to full fire. If the unit rumbles or runs rough, perform
combustion calibration.
6.
Probable causes from 3 to 16 for AIRFLOW
FAULT DURING IGNITION applies for this fault.
6.
See CORRECTIVE ACTIONS from 3 to 12 for AIRFLOW FAULT
DURING IGNITION.
