Learn to Brew A421 Johnson Digital Controller

Learn to Brew A421 Johnson Digital Controller

Q: This unit will only let me set the off temperature, no other menu will display, and I cannot find any info on tech support. can anyone help?

Press the menu button 1 time, OFF will appear. Then press the up arrow 1 time to move to ON. Then press menu button 1 time and use arrow buttons to set desired temp. Press menu button to save new setting. You must push menu button after adjusting to save new setting

Q: Hello, a421abc-02c- a421 series can this product use 24v dc? which model series is compatible with 24v dc please advise. with thanks,

I used this unit to run a Raypak pool heater which operates at 24 volts.

Q: I see a comment that it's only 120v, although description says 120/240. I have a 240v power source. What are the input/output voltages?

I have only used mine on 120 V. However according to A421 Series Standard Electronic Temperature Controls Installation Instructions A421ABC-x, A421AEC-x, A421GBF-x, A421GEF-x Part No. 24-7664-3019, Rev. D Issued March 2016 the enclosed instructions Page 5 figure 4, the A421 can be used on 240 v.

Q: Does this control Heating and cooling at the same time (for fermenting then curing chamber)? Or do I have to unplug the fridge and plug in the heater

Hello, Thank you for your question. This unit only controls one component at a time, so you would have to disconnect the fridge to run a heater. You also have to change the functionality of the controller to heat mode if switching from cooling to heating or vice versa. Please let us know if there are any other questions we can answer. Best Wishes, Emmie Beverage Factory 800.710.9939

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Product ID: 292114174

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💡Bright LCD Display

🔌Easy Plug & Play

🌡️Temp Range: -40 to 212°F

Frequently Bought Together

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Description

Brew Like a Pro! 🍻 Elevate Your Craft with Precision Control

MADE IN THE USA - Support local craftsmanship with this high-quality controller.
SLEEK LCD SCREEN - Stay informed with a bright display that enhances your brewing experience.
USER FRIENDLY INTERFACE - Navigate with ease using the intuitive 3-button design.
VERSATILE TEMPERATURE RANGE - Perfect for all brewing needs, from chilling to heating.
PRECISION TEMPERATURE CONTROL - Maintain your ideal brewing conditions effortlessly.

The Learn to Brew A421 Johnson Digital Controller is a state-of-the-art temperature management system designed for brewing enthusiasts. With an impressive temperature range of -40 to 212°F, a user-friendly 3-button interface, and a bright LCD screen, this controller ensures that your brewing process is both efficient and enjoyable. Proudly made in the USA, it’s the perfect addition to any brewing setup.

Specifications

Brand	Johnson Controls
Manufacturer	CAI - JOHNSON CONTROLS
Country of Origin	USA
Model number	A421ABG-02C
Item Weight	1 kg 20 g
Product Dimensions	19.05 x 17.15 x 12.7 cm; 1.02 kg
Item model number	A421ABG-02C
Item Height	5 Inches
Item Width	6.75 Inches
Voltage	120 Volts
Are batteries included?	No

Have a Question? See What Others Asked

This unit will only let me set the off temperature, no other menu will display, and I cannot find any info on tech support. can anyone help?

Hello, a421abc-02c- a421 series can this product use 24v dc? which model series is compatible with 24v dc please advise. with thanks,

I see a comment that it's only 120v, although description says 120/240. I have a 240v power source. What are the input/output voltages?

Does this control Heating and cooling at the same time (for fermenting then curing chamber)? Or do I have to unplug the fridge and plug in the heater

Common Questions

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Learn to Brew A421 Johnson Digital Controller

Description

Specifications

Have a Question? See What Others Asked

Common Questions