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Toyotomi Laser 300 User Manual

Toyotomi Laser 300
48 pages
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VENTED HEATER SERVICE MANUAL
Laser 300 (TypeA)
Laser 530 (TypeA)
Laser 560 (TypeA)
Laser 730 (TypeA)

Table of Contents

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Toyotomi Laser 300 Specifications

General IconGeneral
Ignition SystemAutomatic
Heating Power3.0 kW
Fuel Consumption0.086 - 0.313 l/h
Tank Capacity5.4 l
Safety FeaturesTip-over protection

Summary

Section 1 Description

1-1 Introduction

Overview of the Laser Heating System's advanced features and benefits.

1-2 Physical Specifications

Table detailing dimensions, weight, and flue pipe hole size for models.

1-3 Description of Functions

Explanation of the heating cycle, programmable timer, and operating stages.

1-4 Description

Lists the primary components and systems that make up the Laser Heater.

1-5 Combustion Chamber

Details the heat chamber and heat exchanger, and their function in combustion.

1-6 Burner

Describes the burner's construction, igniter, fuel line, flame sensor, and burner ring.

1-7 Burner Ring Assembly

Details the burner ring assembly design and its mounting.

1-8 Burner Mat / Coating

Explains the burner mat's role in fuel vaporization and its part numbers.

1-9 Flame Rod Sensor

Describes the flame rod sensor's function and mounting location.

1-10 Igniter

Explains the ceramic-type igniter's purpose and part number.

1-11 Flue Pipe

Details flue pipe installation, thickness, and design for air intake/exhaust.

1-12 Blower Motor Assembly

Describes the turbo fan for combustion, dual function fans, and 3-speed operation.

1-13 Air Circulation Fan

Explains the air circulation fan's role in room heating and its speeds.

1-14 External Fuel Tank

Discusses external fuel tank installation requirements and options.

1-15 Fuel Pump

Details the fuel pump mounting, solenoid, and control circuit.

1-16 Control Circuit Board

Explains the control circuit board's functions: safety, relays, clock, thermostat.

1-17 Room Temperature Sensor

Describes the room temperature sensor's range, mounting, and wire extension.

1-18 Fuel Sump (Fuel Constant Level Valve)

Details the constant level valve's auto shutoff, reset button, and float mechanism.

1-19 Cloth Covered Exhaust Pipe

Explains the use of insulating cloth covers for exhaust lines for safety.

1-20 Air Circulation Fan Filter (Cover)

Describes the fan filter's role in user safety and preventing physical injury.

1-21 Fuse

Details fuse ratings and their function in protecting against power surges.

1-22 Overheat Protector Switch

Explains the overheat protector switch, its rating, and reset procedure.

1-23 Pressure Relief Plate

Describes the pressure relief plate's location and function to prevent damage.

1-24 Combustion System

Explains how fuel and air mix, ignite, and produce heat, with overheat protection.

1-25 Forced Flue Venting System

Details how the venting system channels air for combustion and exhausts by-products.

1-26 Fuel Delivery System

Explains fuel movement from storage to burner, controlled by the fuel pump.

1-27 Electrical System

Refers to Section 6 for electronic diagrams like wiring and circuit board layouts.

1-28 Safety Mechanisms

Highlights built-in safety features protecting users and the heater.

1-29 Power Failure Recovery System

Explains automatic heater restart after power restoration.

1-30 Operation Recovery

Describes how to resume operation within 3 seconds of power interruption.

1-31 Reigniting Operation

Describes the procedure to restart reignition if it takes too long.

1-32 Error Codes History

Explains how to view and interpret past error codes displayed by the unit.

1-33 Igniting Failure Error Lock

Details the 'E-22' error code for repeated ignition failures and reset method.

1-34 Burner Thermistor Normal Detecting Temperatures

Lists normal temperature ranges for burner thermistors on different models.

1-35 Power Failure Recovery System

Explains what settings are stored in memory during power failure.

1-36 Backup Life

Provides information on backup time for stored data and unit lifespan.

1-37 Deleting The Error Code History

Describes the procedure to clear the error code history.

1-38 Detection of Abnormal Electrical Frequency Condition

Explains 'E-0' error for abnormal frequency and reset steps.

1-39 Power Button Malfunction

Details symptoms and behavior of a power button short circuit.

1-40 Low Voltage Detection

Explains 'E-0' error for low voltage and its detection period.

1-41 Forced Flame Detection

Describes behavior when flame is detected during incorrect operation.

1-42 Manual Ignitor Cleaning System

Details the manual procedure for cleaning the igniter using button sequences.

1-43 Automatic Ignitor Cleaning System

Explains the automatic igniter cleaning cycle that runs at 2 AM.

1-44 Manual Combustion Operation Mode

Describes how to enter and exit manual combustion modes and view data.

1-45 High Altitude Setting Mode

Explains how to adjust settings for high altitude operation and its effects.

1-46 Combustion Cleaning Mode

Details the automatic combustion cleaning cycle that occurs after 2 hours of high mode.

1-47 Flow Volume Setting Mode for The Fuel Pump

Explains how to adjust fuel pump flow rates across 9 levels for different modes.

Section 2 Routine Maintenance

2-1 Introduction

Defines routine and corrective maintenance for heater performance.

2-2 Routine Maintenance

Provides a schedule of periodic maintenance tasks for optimal heater operation.

Section 3 Servicing

3-1 Introduction

Covers causes and procedures for heater efficiency losses and servicing needs.

3-2 Cleaning The Heat Exchanger and Burner

Detailed steps for opening and cleaning the heat exchanger and burner assembly.

3-3 Removal of Water Deposits and Contaminants From Fuel Sump and Fuel Lines

Procedure for draining fuel system to remove water and contaminants.

3-4 Cleaning The Fuel Filter or Water Block Filter

Recommends checking and cleaning the fuel filter or water block filter.

3-5 Error Message

Lists error codes (Hi/Lo) related to room temperature and sensor issues.

3-6 Inspect Intake/Exhaust Air Lines

Guides on inspecting air lines for leaks, connections, and obstructions.

3-7 Verify Igniter Operation

Procedure to visually inspect igniter glow and check power/resistance.

3-8 Clean Fuel Inlet Strainer

Details how to disassemble and clean the fuel inlet strainer.

3-9 Replacement of Fuses

Explains how to replace blown fuses and the importance of correct ratings.

3-10 Fuel Contamination

Guides on diagnosing and cleaning fuel contamination issues in the system.

3-11 Cleaning Blower Motor (Only Laser 560/730)

Procedure for cleaning the exhaust fan and blower motor assembly.

Section 4 Trouble Shooting

4-1 Electrical System

Diagram illustrating the electrical components and their connections on the circuit board.

4-1 Resistor/Capacitor Value

Provides reference values for resistors and capacitors in the system.

Component Voltage Readings

Lists expected voltage readings for various components during operation.

4-2 Control Circuit Board Time Chart

Details timing specifications for control board operations like motor start and preheating.

Flame detector

Specifies detection current and allowable leakage resistance for flame detection.

Room thermistor

Lists temperature settings, differentials, and resistance values for the room thermistor.

Differential 3

Details temperature settings and resistance for flame extinguishing control.

Preheat reduction resistor 1

Specifies resistance values and preheat times for reduction resistor 1.

Preheat reduction resistor 2

Specifies resistance values and preheat times for reduction resistor 2.

Room thermistor combustion control

Diagram showing how room temperature affects combustion modes (H, M, L, OFF).

Initial room thermistor combustion control

Explains combustion modes based on temperature differentials after ignition.

Power saver operation

Describes power saver logic for flame extinguishing based on temperature.

Burner thermistor trouble detection

Details resistance values for detecting burner thermistor faults.

Fuel pump frequency control

Lists frequency control values for various fuel pump combustion modes (H, M, L).

Blower motor control

Specifies RPM ranges for blower motor speeds (High, Medium, Low) in different modes.

Motor lock speed

Lists RPM values for motor lock detection during combustion and displays 'E-8'.

Fan motor control

Details fan motor control ratios (ON:OFF) for different speed modes.

Overheat protector

Describes behavior when abnormal overheat is detected, showing 'E-12'.

Power failure recovery system

Explains how settings are maintained during power failures.

Segment safety display

Lists error codes (E-0, E-2, E-6, E-8, E-12, E-13, E-22, E-23) and their causes.

Failure Checks and Solutions

Comprehensive guide to diagnosing and resolving operational failures.

Does Not Operate

Troubleshooting steps for when the unit does not operate, checking fuse and ribbon cable.

Stops Operation (Error E-8)

Troubleshooting steps for E-8 error (motor lock/obstruction), checking room temp and fan.

Stops Operation (Error E-2)

Troubleshooting steps for E-2 error (igniter/flame sensor issues), checking fuel and voltage.

Stops Operation (Error E-6)

Troubleshooting steps for E-6 error (flue pipe blockage/leak), checking fuel pump and wiring.

Stops Operation (Error E-22)

Troubleshooting steps for E-22 error (ignition failure), checking fuel and main board.

Stops Operation (Error E-12)

Troubleshooting steps for E-12 error (overheat protector activated), checking fan cover and circulation fan.

Stops Operation (Error E-13)

Troubleshooting steps for E-13 error (burner thermistor), checking resistance and wiring.

Stops Operation (Ignition Failure x3)

Troubleshooting for ignition failure (E-2) occurring three times, checking fuel and igniter.

Performance Issues (Flame, Noise, Smoke)

Troubleshooting yellow flame, noise, smoke by checking fuel pump, burner ring, and ducts.

Room Temp Indicates 'LO'

Troubleshooting for 'LO' room temp indicator, checking room temp sensor and wiring.

Stops Operation (Error E-23)

Troubleshooting for E-23 error (primary flame sensor malfunction), checking sensor and wiring.

Stops Operation (Error E-0)

Troubleshooting for E-0 error (power source failure), checking power supply and main board.

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