Rinnai RDT-90-RM-S User Manual (English)

Questions and Answers:

Z
Zachary DiazAug 6, 2025
Why is the drying time so long on my Rinnai RDT-90-RM-S Dryer?
- E
  Erica RobbinsAug 7, 2025
  If the drying time is longer than usual or the clothes aren't drying properly in your Rinnai Dryer, several factors could be at play. First, check if the filter cleaning lamp is lit or blinking, and clean the lint filter if needed. Make sure you aren't overloading the dryer with too many clothes and that the clothes were sufficiently spun-dried before loading. Ensure the front door wasn't opened during operation, and you didn't add or switch clothes during the drying cycle. Confirm that the discharge duct isn't blocked and that you're using the correct drying setting (THICK) for heavy items.
D
Daniel WilsonAug 17, 2025
What to do if my Rinnai RDT-90-RM-S has no operation?
- A
  angela79Aug 17, 2025
  If your Rinnai Dryer is not operating, consider the following potential causes: Check if there has been a power outage. Inspect your home's fuse or circuit breaker. Ensure the power plug is properly inserted into the outlet. Verify that you have pressed the “Power” or “Start / Pause” switch. Also, make sure the front door is completely closed.
J
Jason GrantAug 26, 2025
What to do if Rinnai Dryer has no ignition?
- D
  Daisy DavisAug 26, 2025
  If your Rinnai Dryer isn't igniting and the operation/combustion lamp isn't lighting up (red), make sure the gas cock is fully open. Also, check if there's any air remaining in the gas pipe and ensure the gas meter is operating correctly.

Rinnai RDT-90-RM-S Specifications

General

Brand	Rinnai
Model	RDT-90-RM-S
Category	Dryer
Language	English

Summary

Four Courses to Choose From

GENERAL Course

Details for drying regular clothes like underwear and shirts.

THICK Course

For drying thick clothes, such as jeans and sweaters.

ECO Course

Economical drying option, longer drying time for gas savings.

SHEET/BLANKET Course

For drying large items like sheets and blankets.

Easy Filter Removal

Safety Precautions: Be Sure to Follow These Precautions

Safety Symbols and Meanings

Explains the meaning of Danger, Warning, and Caution symbols for safe operation.

Safety Precautions: Installation

Remodeling/Disassembly Prohibited

Prohibits unauthorized modification or repair of the equipment to ensure safety.

Checking Gas and Power Supply

Ensure correct gas type and power supply are used as per the data plate for safe operation.

Fire Prevention Equipment in Surrounding Area

Maintain adequate space between equipment and flammable objects to prevent fires.

Installation Site and Ventilation Precautions

Installation Site Guidelines

Guidelines for choosing a safe and suitable location for the dryer, avoiding hazards.

Ventilation Requirements

Specifies air vent requirements for proper operation and safety, preventing combustion issues.

Power Cord Safety

Instructions for safe handling and placement of the power cord to prevent shock or fire.

Safety Precautions: Actual Use

Fire Prevention Measures

Measures to prevent fires, including avoiding flammable materials and ignition sources.

Material Drying Restrictions

Warnings against drying specific materials like polypropylene or oil-treated clothes.

Safe Operation Interruption

Procedures for safely stopping the equipment and removing the power plug.

Pocket Contents Check

Reminder to check pockets for flammable items like lighters before drying.

Prompt Clothes Removal

Advise to remove clothes immediately after drying to prevent spontaneous combustion.

Remedies for Abnormal Operation

Handling Operational Malfunctions

Steps to take if the dryer operates abnormally or shows signs of malfunction.

Consulting Troubleshooting

Refer to troubleshooting sections for specific issues and error messages.

Emergency Shutdown Procedures

Immediate actions to take during emergencies like earthquakes or fires.

Names & Functions of Parts

Front View Components

Identifies parts visible on the front of the dryer, including controls and the door.

Rear View Components

Identifies parts visible on the rear of the dryer, such as connections and covers.

Dryer Components and Accessories

Drum and Indicator Panel

Details about the drum, warning labels, data plate, and operation indicator panel.

Lint Filter System Overview

Explanation of the lint filter's function and its components for effective lint removal.

Included Dryer Accessories

Lists items that come with the dryer, like instructions and a drying rack for small items.

Operation Indicator Panel and Accessories

Operation Indicator Panel Details

Explains the functions of various indicator lamps and buttons on the control panel.

Dryer Accessories Identification

Lists the accessories provided with the appliance for reference.

Operation Indicator Panel Functions

SELF-CLEAN Operation Controls

Used for selecting and indicating the self-clean operation status.

Digital Indicator Display Functions

Shows estimated remaining time and safety interlock details.

Before Using the Equipment

Flow of Operations Guide

Step-by-step guide for preparing and starting the dryer, from checking filters to removing clothes.

Items You Must Not Dry

Fire Hazard Items

Lists materials and items that pose a fire hazard if dried in the machine.

Items Damaging Clothes

Identifies garments or materials that may be damaged by the drying process.

Items Damaging Dryer Equipment

Lists items that can cause malfunctions or damage to the dryer itself.

How to Select Courses

GENERAL Course Selection

For regular daily clothes like underwear and shirts.

THICK Course Selection

For thick, difficult-to-dry items like jeans and sweaters.

SHEET/BLANKET Course Selection

For large items such as sheets and duvet covers.

ECO Course Selection

For energy-saving drying, though it takes longer.

Approximate Drying Weights and Drying Times

Drying Time Reference Table

Provides estimated drying times for various types of clothes based on weight.

Folding Sheets and Blankets

Instructions on how to fold large items for optimal drying performance.

How to Use Drying Course Operation

Selecting the Drying Course

Guides users to choose the appropriate course for their laundry based on type.

Starting the Drying Operation

Step-by-step instructions to load clothes and start the dryer operation.

How to Use Timer Operation

Setting the Drying Time

How to select and set a specific drying duration for the operation.

Starting Timer Operation

Steps to initiate the drying process using the timer function.

How to Use SELF-CLEAN Operation

Preparing for Self-Clean Cycle

Instructions to ensure the drum is empty before starting the self-clean.

Initiating Self-Clean Cycle

Steps to activate the drum cleaning cycle for sterilization.

Buzzer Functions

Buzzer Notification Chart

Lists sounds and their meanings for different operations and states.

Canceling Buzzer Sound

Procedure to turn off or on the audible notifications.

Advanced Operation

Avoiding Overloading Clothes

Advice on loading capacity to prevent operational issues and damage.

Reducing Lint Production

Tips for minimizing lint accumulation during drying to maintain efficiency.

Minimizing Static Electricity

Methods to reduce static charge on clothes using fabric softener.

Handling Clothes with Fasteners

Instructions for closing zippers and hooks to protect clothes and dryer interior.

Remaining Time Display (Course Operation)

Understanding Estimated Time

Explains how the dryer estimates and displays the remaining drying time based on conditions.

Daily Inspection and Maintenance

Performing Daily Maintenance Checks

Key checks for power cord damage and filter cleanliness before use.

Preparing for Maintenance Tasks

Steps to safely prepare the dryer before performing maintenance, including power off.

Maintenance Methods

Tools and Detergents for Maintenance

Recommended and prohibited items for cleaning and upkeep of the dryer.

Main Unit Cleaning Procedure

Routine cleaning instructions for the dryer's exterior body.

Air Inlet Filter Maintenance

Steps for cleaning the air inlet filter monthly to ensure proper airflow.

Cleaning the Lint Filter (Every Time After Use)

Removing the Lint Filter Set

Step-by-step guide to detach the lint filter and pocket for cleaning.

Cleaning Lint from Filter Pocket

Instructions for removing lint from the filter pocket, including washing if needed.

Reinserting the Lint Filter

Steps to correctly put the lint filter back into place after cleaning.

Troubleshooting

No Operation Issues

Common causes and checks for when the dryer does not start or respond.

Ignition Problems

Solutions for issues where the dryer fails to ignite or the combustion lamp is off.

Drying Time Issues

Reasons for long or unsatisfactory drying and how to address them.

Gas Smell Detection

What to do if a gas smell is detected, prioritizing immediate safety.

Symptoms Not Equipment Malfunctions

Post-Operation Sounds Explained

Explains normal sounds after clothes are removed or buzzer sounds during operation.

White Smoke from Discharge Explained

Clarifies normal occurrence of white smoke from the discharge vent on cold days.

Popping or Clicking Sounds Explained

Explains sounds related to gas ignition or burner shrinkage as normal.

Ignition Delay Explained

Explains the safety delay in the ignition process to prevent explosions.

Time Display Fluctuations Explained

Explains why the remaining time display might change or fluctuate.

Displayed Messages

Power Outage Message

Indicates power outage and equipment unavailability during such events.

Blocked Filter or Overheating Error

Alerts to lint blockage or internal overheating, stopping operation.

Ignition Failure Message

Signals issues with pilot light ignition or flame loss during the drying cycle.

Switch Circuit Error Message

Indicates an abnormality in the start/pause switch circuit, stopping operation.

Displayed Messages (Continued)

Drum Rotation Abnormality Message

Alerts when the drum fails to rotate or rotates insufficiently.

Fan Rotation Abnormality Message

Signals issues with the discharge fan or drum rotation.

Overcurrent Protection Message

Indicates shutdown due to overcurrent or fuse issues, stopping operation.

Specifications and Dimensional Diagram

Technical Specifications

Lists model details, gas consumption, power, weight, and drying capacity.

Dimensional Diagram

Provides visual representations of the dryer's overall dimensions for installation planning.

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