Technical Questions Regarding WYT-19 Diamante Pro Series Wall-Mounted Equipment

Wall Mounted WYT-19 Diamante Pro Series

Technical Questions Regarding WYT-22 Diamante Ultra Series Wall-Mounted Equipment

Wall Mounted WYT-22 Diamante Ultra Series

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Need technical information for your Diamante Series system? Review these Help Center articles to gain a better understanding of the systems. 

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Product Data & Technical Information

Discontinued Products

Diamante Series Systems (WYT-19, WYT-22)

Use these specific technical articles to learn more about Diamante Series systems.

Technical Documentation (Diamante Series)

Pioneer offers hyper-heat units

Pioneer systems offer both heating and cooling functions

Understand the difference between 115V and 230V systems

Understand the refrigerants used for each model

How to Choose a System

Mini splits are capable of using fewer indoor units than the outdoor unit’s zonal capacity

Pioneer mini splits function as dehumidifiers

Pioneer offers different lineset lengths

Pioneer offers pre-charged linesets

Pioneer offers pre-flared linesets

Pioneer systems include factory pre-charged refrigerant

Single-zone mini splits cannot be used with multiple indoor units

Understand the life expectancy of Pioneer systems

Mini-Split Basics

Determine the unit size needed for your space

Match the lineset diameter to your Pioneer indoor unit

Understand why short cycling occurs when sizing systems

Sizing & Efficiency Guide

Start Here

Understand the differences between Inverter+ and Inverter++ systems

Understand the differences between the wall-mounted ductless mini splits

Understand which units are rated Energy-Star

Compare Models

Learn about the discounts available

Learn about the Energy-Star Tax Credits available for Pioneer systems

Learn more about IRA tax credits

Learn why your Pioneer discount code only says "SAMPLE"

Redeem your Pioneer Rewards Points when shopping online

Understand how to manage multiple credit card charges with Pioneer

Financing & Payment

Learn about our shipping and delivery details

Understand the qualifications for free shipping

Order Status & Shipping

Diamante Essenza (WYT-17) Overview

Diamante Pro (WYT-20) Overview

Quantum Ultra - High-Wall Series (WYT-24) Overview

Quantum Hyperformance (WYT-25) Overview

Quantum Fresh (WYT-FA) Overview

Quantum Ultra - Ceiling Cassette (CYT-24) Overview

Quantum Ultra - Ducted Ceiling Concealed (RYT-24) Overview

Quantum Ultra - Floor-Ceiling Flex (UYT-24) Overview

Vertex Ducted Central Split (DYC-18) Overview

Quantum Ultra - Multi-Zone Overview

Product Line Overviews

Figure out how to start your return

Find out how to complete returns

Learn about our return policy

Learn about our policy for undeliverable or refused shipments

Understand how to return an item

Understand the eligibility requirements for refunds

Understand our return fees

Understand our return process

Returns & Refunds

Shopping & Pre-Purchase

Find an installer for your system

Find professionals to install your Pioneer system

Learn who is permitted to install your system

Understand if our systems can be self-installed

Understand the cost and time spent on installing systems

First-Time Setup

Angle linesets upward

Setup the lineset to exit from the side of the indoor unit

Can a wall-mounted indoor unit be set onto the ceiling instead?

Does the indoor unit require anything extra in order to be mounted to the wall?

How to connect the drain hose of LCAC systems

Understand 6-foot plastic whips and 4-lead mini split connection wire

What are the requirements for installing a mini split?

What gauge of wire is used for connections between the ductless mini split indoor and outdoor sections?

What hole saw size do I need for drilling walls to accommodate drain and refrigerant lines?

What is the ideal height for mounting indoor units?

What torque wrench size do I need?

Installation Requirements

What does “multi-zone” mean?

Multi-Zone Units

Installation & Setup

CL error code

Filter Cleaning & CL Code

Diagnose and prevent crossed wiring in multi-zone systems

Do I need to restart my unit manually after the power goes out?

How do I determine which breaker size and wire is needed for my system?

How does my system receive power?

Electrical Related Queries

Can I turn off the LED display for the indoor unit?

How can I locate the Pioneer model or serial number for my system?

General Queries

Does the fan for my system shut off in Cooling mode?

How can I check the resistance of a Pioneer temperature sensor?

How can I fix my indoor air handler when the unit is not turning on?

What type of oil is used for my unit?

Understand how Cased A-Coils interact with furnaces and other heating units

HVAC Related Queries

Maintenance Tips

Can I operate the indoor unit without a remote control?

Switch between °F and °C on the RG10 remote

RG10 Remote

Remote Control Guides

Connect CYB, RYB, and UYB systems with the NetHome Plus App

Connect WYS-20 and WYS-22 systems with the NetHome Plus App

NetHome Plus

Connect your WYT-19 Diamante Series with the Pioneer Airlink App

Connect your WYT-22/WYT-24/WYT-25 Series with the Pioneer Airlink App

Integrate the Pioneer Airlink App with Apple's Smart Home Environment

Pioneer Airlink App

Wi-Fi App Guides

Operation & Usage

E0 error code

E1 or E2 error codes

E3, E7, or E8 error codes

E4 error code

E6 error code

E9 error code (Diamante Series)

E9 error code (Quantum Series)

EF error code

EU error code

F4 error code

F5 error code

F6 error code (Diamante Series)

F6 error code (Quantum Series)

F7 error code

F8 error code

Fd error code

Fy error code

H1 or H2 error code (Multi-Zone Quantum Ultra Series)

P0 error code

P1 error code

P2 error code

P4 error code (Diamante Series)

P4 error code (Quantum Series)

P5 error code

P6 error code

P7 error code

P8 error code

P9 error code

PA error code (Multi-Zone Quantum Ultra Series)

By Error Code

Why did my ductless mini split system freeze on the inside air handler?

Not Heating

How can I fix leaks that are difficult to trace?

How do I apply Pioneer Flare Leak Guard during installation?

Why is my wall-mounted indoor unit leaking water improperly?

Water Leaks

By Symptom

E9/P0 error codes

Indoor unit displaying 0A code

Troubleshooting (WYT-19 & WYT-22)

E1/EL 01/EL01 error codes

E3/EH 03/F5/EC 07 error codes

EC/EL 0C error codes

F4/EC51 error codes

LCAC error codes

P0/PC00 error codes

P1/PC01 error codes

P2/PC02 error codes

PC 03/PC03 error codes

P4/PC 04/PC04 error codes

Troubleshooting (WYS, CYB, RYB, UYB, & FYB)

Troubleshooting (Discontinued Products)

Troubleshooting

IDU Disassembly for Diamante Essenza / Diamante Pro / Quantum Ultra - High Wall Mount

IDU Disassembly for Quantum Hyperformance

ODU Disassembly for Diamante Essenza / Diamante Pro / Quantum Ultra - High Wall Mount / Quantum Hyperformance