Weil-McLain 550-110-260/02002 manual 11d Troubleshooting control module lights

Page 45

Boiler Manual

11d Troubleshooting — control module lights

CHART 1 — Troubleshooting POWER light status

— Usually indicates reversed 120 VAC polarity if POWER light flashes by itself —

Electrical shock hazard — Wherever you see ▲TURN OFF POWER▲, follow the instructions. Failure to follow instructions could result in severe personal injury, death or substantial property damage.

Is POWER light off?

No

 

 

Yes

 

 

 

 

 

 

 

 

 

 

 

 

Is POWER light...

 

 

 

 

 

 

Flashing

Flashing with

On steady

alone

another light

(not flashing)

 

 

 

 

 

 

 

 

 

 

 

 

 

TSTAT CIRC

Chart 2

 

 

 

light flashing

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PRESS SWITCH

Chart 3

Chart 5

 

light flashing

 

 

 

 

 

 

 

 

 

 

 

 

FLAME

Chart 4

Chart 6

 

light flashing

 

 

 

 

 

 

 

 

 

 

 

For insufficient heat or no heat problem, go to Chart 7 if POWER light is on steady, with no other light flashing.

•Usually indicates polarity on incoming 120 VAC power line is wrong.

•▲TURN OFF POWER▲ at service switch or breaker, then reverse the HOT and NEUTRAL wires entering the boiler in the J-box.

•Restore POWER at service switch or breaker.

Is POWER light flashing now?

No

 

Yes

 

 

 

 

 

 

 

 

 

 

 

 

 

Have system checked by a

 

 

 

licensed electrician.

 

 

 

If problem persists, call your

 

 

 

Boiler should now

 

local Weil-McLain sales

operate normally.

 

representative.

 

 

 

 

 

•Make sure service switch or circuit breaker is on or fuses are good.

•Remove 120 VAC IN plug (Figure 25, item 3, page

44)on control module.

•Using voltmeter, check across top and bottom pins of 120 VAC IN plug.

Does voltmeter indicate 120 VAC?

No

Yes

 

 

 

Problem is with incoming electricity. Have licensed electrician repair circuit.

•Reconnect 120 VAC IN plug.

•Remove 120 VAC transformer PRIMARY plug (Figure 25, item 2, page 44) on control module.

•Using voltmeter, check across top and bottom pins of PRIMARY receptacle.

Does voltmeter indicate 120 VAC?

No

Yes

 

 

 

Replace control module.

Retest.

•Reinstall 120 VAC transformer PRIMARY plug.

•Remove 24 VAC transformer plug (Figure 25, item 5, page 44) on control module.

•Using voltmeter, check across pins of receptacle.

Does voltmeter indicate 24 VAC?

No

Yes

 

 

 

 

Replace transformer.

 

Replace control module.

Retest.

 

Retest.

 

 

 

Part number 550-110-260/0200

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Contents Page ① Control module How it worksPage Contents Installer Please read before proceedingUser 1a Prepare boiler location codes & checklist Residential garage installation 1b Prepare boiler location clearancesFlooring and foundation Removing from existing vent 1c Prepare boiler location vent systemAir contamination 1d Prepare boiler location contaminationCGs combustion air options 1e Prepare boiler location air openingsSizing air openings for CGs installations Orifice replacement procedure 2a Prepare boiler placement & setupPlace boiler/crate near position Inspect orifices and burnersPerform hydrostatic pressure test 2b Prepare boiler pressure testPrepare boiler for test Fill and pressure test3a Water piping general information Expansion tank 3b Water piping single-zone systemDiaphragm-type or bladder-type expansion tank Figure Closed-type expansion tank FigureConverted gravity or steam systems 3c Water piping multiple zonesTypical piping multiple-zone installations 3d Water piping low temp systems Temperature gauges Valve adjustmentFor radiant heating or converted gravity systems Primary/secondary preferred bypass piping3e Water piping low temp systems Boiler-bypass alternate piping 3f Water piping low temp systems 3f system-bypass alternate piping 3g Water piping refrigeration systemPrevent chilled water from entering boiler Connecting gas supply piping to boiler Venting and combustion airGas piping Length Natural GasWiring connections Field wiringThermostat Junction Box furnished7a Start-up preparation Freeze protection when usedDetermine if water treatment is needed Check for gas leaks7b Start-up operate boiler 7a Start-up preparation7c Start-up if boiler doesn’t start Check burner flamesCheck for Installation and service certificate Check-out procedure checklistRaise room thermostat to call for heat 9a Operation sequenceSchematic wiring diagram 9b Operation wiring diagramsService 9c Operation lighting instructions For Your Safety Read Before OperatingService technician 10a Service and maintenance schedule10b Service & maintenance annual start-up Boiler heating surfaces Burners, base and inlet air boxCondensate drain system Inducer motor10b Service & maint. annual start-up Lever must be operated AT Least Boiler relief valveReview with owner Before troubleshooting 11a Troubleshooting procedureCheck pressure switch setting 11b Troubleshooting air pressure switchControl indicator lights lockout modes 11c Troubleshooting control moduleControl module connections Chart 1 Troubleshooting Power light status 11d Troubleshooting control module lightsChart 2 Tstat Circ & Power lights flashing Chart 3 Press Switch & Power lights flashing Chart 4 Flame & Power lights flashing Turn OFF Power to boiler at service switch or breaker Does blower motor operate? Verify Sequence of operation, , 12a Replacement parts Page Page Page Page Page Dimensional drawing 13a DimensionsDOE 13b RatingsRemoval of Combustion Chamber Lining or Base Panels Handling ceramic fiber and fiberglass materials

550-110-260/02002 specifications

Weil-McLain is a well-known manufacturer of high-quality heating systems and boiler solutions, and the 550-110-260/02002 model is a testament to the company's commitment to innovation and performance. This particular boiler is designed for commercial and residential applications, providing exceptional heating efficiency and reliability.

One of the standout features of the Weil-McLain 550-110-260/02002 is its robust construction. Built using durable materials, this boiler is engineered to withstand demanding environments while maintaining optimal performance. The unit boasts a high thermal efficiency rating, which translates to lower energy costs and reduced environmental impact. The advanced design ensures that fuel consumption is minimized while delivering consistent heat output.

The Weil-McLain 550-110-260/02002 utilizes a multi-stage burner that enhances combustion efficiency. This feature not only reduces emissions but also improves overall energy use, making it an environmentally friendly choice. The sophisticated control system allows for precise modulation of the burner, ensuring that the boiler operates at peak efficiency under various load conditions.

The boiler is equipped with a user-friendly digital control interface, providing operators with real-time monitoring and diagnostics. This allows for easy adjustments and troubleshooting, which helps to reduce maintenance downtime. The integrated safety features enhance the operational reliability of the unit, ensuring safe operation in any environment.

Another important characteristic of the Weil-McLain 550-110-260/02002 is its adaptability. It can be configured to work with various types of fuel including natural gas and propane, giving users the flexibility to choose the most cost-effective energy source. This versatility also helps to extend the lifespan of the boiler as it can be easily adapted to changing energy needs.

In conclusion, the Weil-McLain 550-110-260/02002 is a high-performance boiler that combines durability, efficiency, and advanced technology. With its robust construction, efficient burner system, and user-friendly controls, it stands out as a reliable heating solution for both commercial and residential applications. The commitment to quality and innovation makes this model a preferred choice for those seeking dependable heating systems. Whether for new installations or replacements, the Weil-McLain 550-110-260/02002 delivers exceptional performance and value.
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