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

45

Page 44 Page 46
Page 45
Image 45
Weil-McLain 550-110-260/02002 manual 11d Troubleshooting control module lights, Chart 1 Troubleshooting Power light status
Page 44 Page 46

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.
Top Page Image Contents