Pool Boiler: Difference between revisions

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First, always ensure that the breaker and GFCI are not tripped, and that the power switch on the side of the unit is turned on.
First, always ensure that the breaker and GFCI are not tripped, and that the power switch on the side of the unit is turned on.
If the boiler does not fire in response to a call for heat, the issue is likely related to an interlock or the ignition system.  Verify that the low water sensor is reset; it can be tripped by air infiltration during filter back-washing.  Ensure that the pump is operating.  Verify that the covers are securely fastened; a loose cover leaks air and may not close the air pressure switches.  Finally, check for the presence of spark and/or pilot light.  This is visible via a small window on the lower-left of the unit.
If the boiler does not fire in response to a call for heat, the issue is likely related to an interlock or the ignition system.  Verify that the low water sensor is reset; it can be tripped by air infiltration when the pump is stopped.  Ensure that the pump is operating.  Verify that the covers are securely fastened; a loose cover leaks air and may not close the air pressure switches.  Finally, check for the presence of spark and/or pilot light.  This is visible via a small window on the lower-left of the unit.
 
The automation system may provide some additional insight regarding a boiler fault state via the [[Pool_Systems_Automation#Display_and_Keypad|PLC Display]].  In the topics below, additional faults and possible remedies are explored.
The flame sensor unit is a consumable item and may need to be replaced at a regular interval (every two years?).  If the pilot valve (PV) is open, but the main valve (MV) never opens, it is likely that adequate flame is not being detected.  This can be verified by measuring the microamp current output of the flame sensor and should be done by a qualified technician.
=== Low Air Pressure ===
=== Low Air Pressure ===


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