Operator`s manual

Operator's Manual: Models CB-1500 & CB-2500 (230 V / 50 Hz)
7-1
SECTION 7: RESETTING THE FURNACE AND BURNER
Understanding Furnace/Burner Shutdowns
When troubleshooting furnace/burner shutdown situations, Clean Burn recommends the following
sequence of actions:
• Follow the procedure for Resetting the Oil Primary Control provided in this section.
• Review the material on the following page about the safety switches to determine if the furnace is
shut down on high limit.
• If the burner still will not restart, contact your Clean Burn Distributor for immediate service.
Understanding the Oil Primary Control
The oil primary control will shut the oil pump and oil solenoid off when it detects flame-out during burner
operation. The oil primary control will then wait approximately 15 seconds (while the burner motor, air
solenoid, and transformer are energized) and attempt to re-ignite the burner (recycle mode). If the burner does
not re-ignite, the control will shut the burner off on safety lock-out. The following procedure explains what
should be done when this occurs. It is very important that you follow these instructions precisely when
resetting the safety on the primary control and restarting the burner.
Resetting the Oil Primary Control
DANGER! DO NOT reset the oil primary control if oil mist is present in the combustion
chamber or when the combustion chamber is hot! DO NOT operate your furnace if excess oil,
oil vapor or fumes have accumulated in or near the unit. As with any oil burning appliance, improper operation
may result in a fire or explosion hazard.
1. Refer to Figure 7A.
2. Allow 5 to 10 minutes for all fuel mist to exhaust from the combustion chamber.
3. If the combustion chamber is hot, allow the furnace to cool for at least 30 minutes. DO NOT
push the reset button.
4. When you are sure that all fuel mist has cleared and the furnace has cooled, push in and hold the
reset button for three seconds, then release. This will reset the control at any time during its operation.
5. If the burner will not restart, call your Clean Burn dealer immediately.
Figure 7A - Danfoss Oil Primary Control
I88853A