YTH9421C1002 | Honeywell VisionPRO IAQ Touchscreen Thermostat & Module

Honeywell · HMIs & Displays

Description  The YTH9421C1002 is a touch screen temperature and ventilation control system designed for multi-stage HVAC systems with advanced humidity and air quality management. It includes a universal programmable thermostat and controller capable of managing heating, cooling, humidification, dehumidification, and ventilation.     Technical Specifications  Condition New/Never Used Surplus Brand Honeywell Category Controls & Indicators Part Number YTH9421C1002 Subcategory Thermostat Product Type Thermostat & Control System Series VisionPRO Control Stages 3 Heat / 2 Cool (Conventional), 4 Heat / 2 Cool (HP) Programmability 7-Day Interface Touchscreen Mounting Style Horizontal Voltage Low Voltage (24 VAC) Power Consumption 12 to 30 W Amperage 0.6 – 1 A Changeover Type Auto / Manual Fan Control Yes Temperature Range (°F) 40°F to 99°F Max Temp Differential 1°F Operating Humidity 5% to 90% RH (non-condensing) Dimensions (H x W x D) 4-9/16" x 6" x 1-1/4" Wiring Terminals C, R, Rc, Rh, Y, Y2, G, L, 1, 2, 3, Vnt1, Vnt2, Dhm2 Sensor Support Indoor sensor compatible Color Premier White Product Status Discontinued (as of Sep 25, 2014) Weight 0.14 lbs       Information About YTH9421C1002 The YTH9421C1002 is a discontinued Honeywell temperature control system, part of the VisionPRO series, phased out in September 2014. This 7-day programmable unit offers 3 Heat / 2 Cool stages for conventional systems and up to 4 Heat / 2 Cool for heat pumps. It connects with an Equipment Interface Module or EnviraZONE panel to centralize control over environmental comfort—including humidity levels and air exchange. The intuitive touchscreen interface and advanced dual-fuel compatibility made this model ideal for residential applications focused on energy efficiency and air quality. Key Features: Multi-Stage Control: Supports 3 Heat / 2 Cool (conventional) and 4 Heat / 2 Cool (heat pump) configurations. Integrated Humidity Management: Controls humidification and dehumidification for year-round comfort. Ventilation Control: Provides fresh air exchange and improved air quality across the home. Touchscreen Interface: Large, user-friendly screen simplifies daily operation and scheduling. 7-Day Programmable: Allows individual schedules for each day to maximize energy savings. Advanced Dual-Fuel Logic: Optimizes performance in systems with both heat pumps and furnaces. Sensor Compatibility: Works with indoor sensors to maintain even temperature distribution. Auto Changeover: Seamlessly switches between heating and cooling modes. Low Voltage Operation: Operates on standard 24 VAC systems with low power consumption. Legacy Honeywell Reliability: Part of the trusted VisionPRO lineup for residential controls. The YTH9421C1002 delivers integrated temperature, humidity, and ventilation management with a sleek touchscreen interface, ideal for whole-home comfort control.

Brand: Honeywell · Category: HMIs & Displays

Key features

• Multi-Stage Control: Supports 3 Heat / 2 Cool (conventional) and 4 Heat / 2 Cool (heat pump) configurations.
• Integrated Humidity Management: Controls humidification and dehumidification for year-round comfort.
• Ventilation Control: Provides fresh air exchange and improved air quality across the home.
• Touchscreen Interface: Large, user-friendly screen simplifies daily operation and scheduling.
• 7-Day Programmable: Allows individual schedules for each day to maximize energy savings.
• Advanced Dual-Fuel Logic: Optimizes performance in systems with both heat pumps and furnaces.
• Sensor Compatibility: Works with indoor sensors to maintain even temperature distribution.
• Auto Changeover: Seamlessly switches between heating and cooling modes.
• Low Voltage Operation: Operates on standard 24 VAC systems with low power consumption.
• Legacy Honeywell Reliability: Part of the trusted VisionPRO lineup for residential controls.

Specifications

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