Energy Tech Laboratories MR212 manual Remote Panel Troubleshooting Chart

Page 23

Remote Panel Troubleshooting Chart

Light Indication

Condition

Possible Cause

No Lights

Power not available to Remote Panel

Bad voltage to unit

 

 

Main disconnect in “OFF” Position

 

 

Circuit breaker tripped

 

 

Bad main transformer

POWER Light Only

Proper unit Off Operation

No problem

 

No power to motor starter

Manual/Off/Auto Switch in “Off” Position

 

 

(3 Position Remote Panels Only)

 

 

Improper damper function

 

 

Low Temperature Thermostat Timed

 

 

Out (Option)

POWER Light and

Proper Ventilation Operation

No Problem

BLOWER ON Light

No Power to Flame Safety Controller

Manual/Off/Auto Switch in “Off” Position

 

 

(2 Position Remote Panels Only)

 

 

Heat/Vent Switch in “Vent” Position

 

 

Gas Pressure Switch Tripped (option)

 

 

High Temperature Limit Thermostat

 

 

Tripped

 

 

Manual/Off/Auto Switch in “Auto”

 

 

Position and Intake Air Thermostat not

 

 

Satisfied

 

Improper Airflow

Insufficient Airflow

 

 

Excessive Airflow

 

 

Bad airflow switch

 

 

Problem with air probes

 

 

Problem with airflow tubing

 

 

Broken Belt

POWER Light and

Proper Heating Operation

No Problem

BLOWER ON Light and

 

 

BURNER ON Light

 

 

CLOGGED FILTER Light On

Filters Clogged

Filters Dirty or Need Replacement

(Optional)

 

 

FLAME FAILURE Light On

Flame Safety Alarm Activated

Combination Valve in “Off” Position

 

No Flame Detected during Pilot

(Unit Sizes 1-3)

 

Stuck Closed Gas Valve

 

Establishment Period

No or Low Gas Pressure

 

 

Bad Spark Electrode

 

 

Bad Ignition Transformer

 

 

Flames Sensor Malfunction

 

 

Clogged Pilot Orifices

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Image 23 Contents
Installation, Operation, and Maintenance Manual Page Table of Contents Warranty Site Preparation InstallationAssembly MechanicalRecommended Supply Ductwork Sizes Roof Mount Installation Installation with Exhaust FanPage Gas Pressure Table GasGas Connection Sizes Motorized Intake Damper Copper Wire AmpacityElectrical Fan to Building Wiring Connection Remote Control PanelStart Up OperationMain Burner Adjustment Heater Start Up Summary Yes Adjust pilot flame Lock unit into High firePulley Setscrew Torque Final Start Up ProcedureMaximum RPM and HP Chart Pulley Adjustment Illustration Pulley Adjustment10 20 IN. Blower Pulley Combination ChartSequence of Operation Flame Safety ControlFlame Safety Controller DC Flame Signal Air Flow SwitchOperation Summary Maxitrol Amplifier High Temperature LimitModulating Gas System Optional Remote Panel Circuit Blower Switch Components Remote Panel Option Airflow Troubleshooting Chart TroubleshootingProper Spark Gap Burner Troubleshooting ChartLight Indication Condition Possible Cause Remote Panel Troubleshooting ChartNothing Happens Troubleshooting FlowchartsGeneral Maintenance MaintenanceYearly Filter Quantity ChartWeeks after startup Every 3 monthsPage Job Information Start-Up and Maintenance DocumentationMaintenance Record Factory Service Department