Table 15.3: Error Codes

Lamp Number

Flame

Meaning

 

Corrective Action

L.O.

 

 

 

 

 

1

2

3

Lamp

 

 

 

 

 

 

 

 

Reset the boiler by turning the Heating System Knob to “0”

 

 

 

 

 

for a few seconds, then returning it to its original position.

 

 

 

 

Differential Water Pressure

Then:

Verify that that boiler and system are purged of air

 

 

 

 

•

 

 

 

 

Switch Failed to Close After

•

Verify that there is at least 4.5psi at the boiler

 

 

 

 

180s

 

gauge

 

 

 

 

 

•

Verify that cirulator is running

 

 

 

 

 

•

Close the throttling valve on the supply more or

 

 

 

 

 

 

install flow restrictor in supply (see piping section)

 

 

 

 

 

 

 

 

 

 

 

Reset the boiler by turning the Heating System Knob to “0”

 

 

 

 

 

for a few seconds then returning it to its original position.

 

 

 

 

Failure to Establish Flame

Push Flame Reset Button. Then verify that:

 

 

 

 

or

• Gas line is purged of air (new installations)

 

 

 

 

Blocked Condensate Trap

• Inlet gas and manifold pressures are correct (see

 

 

 

 

or

 

Start-up Section)

 

 

 

 

Reversed Line Voltage

• Manifold pressure is correct (see Start-up section)

 

 

 

 

Polarity

• Electrodes have a gap of 0.149” – 0.157”

 

 

 

 

 

• Electrodes, flame rod, and wiring are in good

 

 

 

 

(Note: LED #2 will not

 

condition

 

 

 

 

illuminate until error has

• Condensate trap is draining correctly

 

 

 

 

been present for 4 minutes)

• 120VAC exists between the hot (brown)

 

 

 

 

 

 

connection and ground and not between the

 

 

 

 

 

 

neutral (blue) and ground.

 

 

 

 

 

 

 

 

 

 

 

Air Pressure Switch Problem

 

 

 

 

 

 

or

 

 

 

 

 

 

Supply Limit Open

 

 

 

 

 

 

or

Use the flow chart in this section to diagnose the exact

 

 

 

 

Flue Gas Limit Open

 

 

 

 

problem.

 

 

 

 

 

 

 

 

 

(Note: LED #2 will not

 

 

 

 

 

 

illuminate until error has

 

 

 

 

 

 

been present for 4 minutes)

 

 

 

 

 

 

 

 

 

 

 

 

Defective Supply Sensor

Replace Supply Sensor

 

 

 

 

 

 

 

 

 

 

Defective DHW Sensor

Replace DHW Sensor

 

 

 

 

 

 

 

 

 

 

 

Excessive Temperature on

 

Consult Factory

 

 

 

 

Primary Circuit

 

 

 

 

 

 

 

 

 

 

 

 

 

Consult Factory

 

 

 

 

 

 

 

 

 

 

 

 

 

Consult Factory

 

 

 

 

 

 

 

Lamp OFF

Lamp ON

 

 

 

 

 

 

Flashing lamp, alone

Flashing lamp,

or simultaneously

alternate with

with another lamp.

another lamp

67

Page 68 Page 70
Page 69
Image 69
Crown Boiler MWC116ELT, MWC Series, MWC116ENL, MWC116ELL, MWC116ENT Error Codes, Lamp Number Flame Meaning Corrective Action
Page 68 Page 70

MWC116ENL, MWC116ELL, MWC116ELT, MWC116ENT, MWC Series specifications

Crown Boiler's MWC Series represents a commendable choice in the realm of residential and light commercial heating solutions. Specifically, models like the MWC116ENT, MWC116ELT, MWC116ELL, and MWC116ENL stand out due to their exceptional performance, reliability, and innovative features.

At the core of the MWC Series lies a robust cast iron boiler construction designed to withstand the test of time. This material not only provides durability but also enhances heat retention, thereby increasing the system's efficiency. Each model in this series is designed for natural gas or propane fuel types, ensuring flexibility based on availability and user preference.

A notable feature of the MWC116 models is the efficient heat exchanger, which enables rapid heating of water for both space heating and domestic hot water applications. With a heating capacity of 116,000 BTUs, these boilers deliver ample warmth for mid-sized homes or light commercial settings, making them a versatile option for various applications.

The MWC116ENT model is equipped with an energy-efficient electronic ignition system, which enhances reliability and efficiency. This technology reduces energy consumption, providing users with cost savings on their utility bills. Similarly, the MWC116ELT model boasts an integrated aquastat that regulates water temperature, ensuring optimal performance and comfort.

For those requiring increased venting options, the MWC116ELL model includes advanced horizontal venting capabilities, allowing for flexible installation in various environments. This feature aids in overcoming space limitations and facilitating optimal combustion conditions. The MWC116ENL, on the other hand, features a low NOx emissions configuration, making it an environmentally conscious choice for users concerned about their carbon footprint.

User-friendly controls are a characteristic hallmark of the MWC Series, enabling straightforward operation and easy adjustments. The boilers come equipped with a digital display that provides critical system information and diagnostics, streamlining maintenance efforts.

Overall, the Crown Boiler MWC Series, particularly models like the MWC116ENT, MWC116ELT, MWC116ELL, and MWC116ENL, offer an impressive blend of efficiency, flexibility, and advanced technology. These units are designed to meet contemporary heating demands while ensuring sustainable operation, making them a wise investment for comfort and performance in residential and light commercial applications alike. With reliable construction and innovative features, the MWC Series remains a top choice for those seeking effective heating solutions.
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