Crown Boiler MWC116ENL Spécifications télécharger pdf (Page 69)

Table 15.3: Error Codes

Lamp Number

1 2 3

Flame

L.O.

Lamp

Meaning Corrective Action

Differential Water Pressure

Switch Failed to Close After

180s

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

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

Then:

• Verify that that boiler and system are purged of air

• Verify that there is at least 4.5psi at the boiler

gauge

• Verify that cirulator is running

• Close the throttling valve on the supply more or

install flow restrictor in supply (see piping section)

Failure to Establish Flame

Blocked Condensate Trap

Reversed Line Voltage

Polarity

(Note: LED #2 will not

illuminate until error has

been present for 4 minutes)

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

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

Push Flame Reset Button. Then verify that:

• Gas line is purged of air (new installations)

• Inlet gas and manifold pressures are correct (see

Start-up Section)

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

• Electrodes have a gap of 0.149” – 0.157”

• Electrodes, flame rod, and wiring are in good

condition

• Condensate trap is draining correctly

• 120VAC exists between the hot (brown)

connection and ground and not

between the

neutral (blue) and ground.

Air Pressure Switch Problem

Supply Limit Open

Flue Gas Limit Open

(Note: LED #2 will not

illuminate until error has

been present for 4 minutes)

Use the flow chart in this section to diagnose the exact

problem.

Defective Supply Sensor Replace Supply Sensor

Defective DHW Sensor Replace DHW Sensor

Excessive Temperature on

Primary Circuit

Consult Factory

Lamp OFF Lamp ON

Flashing lamp, alone

or simultaneously

with another lamp.

Flashing lamp,

alternate with

another lamp

1 2 ... 64 65 66 67 68 69 70 71 72 73 74 ... 87 88

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Crown Boiler MWC116ENL Spécifications Page 69

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