Crown Boiler MWC116ELT, MWC Series manual Error Codes, Lamp Number Flame Meaning Corrective Action

Page 69

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

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Contents MWC Series Page Table of Contents Key Component Product DescriptionMWC Boiler Principle Components Ratings II SpecificationsMaximum Vent Lengths Other SpecificationsIII Before Installing Clearances To Combustible Or Non-combustible Material Mounting The Boiler Wall Mounting Hole Locations Boiler Mounting VI Air for Ventilation Page Vent System Design VII VentingPage Horizontal Concentric Venting Vent Options 3b Crown Concentric 80/125 Vent Components Vent Options 3,5 3a Crown Concentric 60/100 Vent Components Vent Options 1,24c Positioning Vent Terminal Under Overhangs Vent/ Air Intake Fitting Equivalent Length Vertical Concentric Vent System Vent Option Removing an Existing Boiler From a Common Chimney All cuts are square and allow for proper insertion 21 Dimension L 22 Cutting Outer Pipe 25 Attaching 60/100mm Terminal Section 30 Installation Of 80/125 Adaptor On Boiler 31a Cuttable Straight Section 32 Cutting Straight Pipe 33a Joining Cuttable Pipe 34a Dimension L, 80/125mm Horizontal Terminal 34c Cutting Inner Pipe Of 80/125mm Horizontal Terminal 35a Dimension H 35b Cutting Vertical Terminal 36 Chimney Chase Installation 40 Condensate Piping Arrangement Condensate Trap and Drain LineViii Gas Piping Gas Connection To Boiler Standard Piping IX System PipingBasic Piping Relief Valve Installation Internal Boiler Piping Piping for Special SituationsPrimary-Secondary Piping MWC116E*T Combi Internal Boiler-Side Piping Schematic MWC116E*L Heat-Only Internal Piping Schematic Domestic Water Piping DHW Piping MWC116E*T Combi Internal DHW-Side Piping Schematic XI Wiring Field Supplied Box End Boiler End Location of Terminal Blocks and 7/8 Hole for Whip Field Wiring 120VAC Thermostat Internal Boiler Wiring Location of Automatic Air Vent Cap XII Start-up and CheckoutLocation of Circulator Shaft Cover Control Panel Page Inner Cover Removal MWC Series Lighting and Operating Instructions For Your Safety Read Before OperatingHigh Fire Combustion Readings DHW Xiii OperationHeating System Knob Sequence of Operation Also Refer to Figures 9.7, 9.8, 10.3 Flash Codes During Normal Operation See Part XV for Error CodesXIV. Service and Maintenance Removing Combustion Chamber Cover Inducer Service NotesCondensate Trap Removal No Error Code Displayed XV. TroubleshootingLamp Number Flame Meaning Corrective Action Error CodesFlow Chart for Isolating Limit and APS Errors See Table XVI Parts Flow group and three way diverter valve Model combi Flow and return groups Model c.h. only Pump and main circuit assembly Model combi Pump and main circuit assembly Model c.h. only Gas assembly Connection pipes Control panel and ignition device Model combi Control panel and ignition device Model c.h. only Wiring Model combi Wiring Model c.h. only Fan, combustion chamber and case panels Description Spare part code Description Spare part code Description Spare part code Installation of Carbon Monoxide Detectors Approved Carbon Monoxide Detectors 11/07

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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