This solution is applicable to all instant electric water heater models with constant temperature requirements and adjustable temperature display.
Product Description
Instant water heater control board is the central electronic module that manages the heating process, temperature regulation, and safety features of tankless (instant) water heaters. It monitors water flow and temperature in real time to provide efficient, on-demand hot water while protecting the system from overheating, dry burning, and electrical faults.
Choig is a leading manufacturer specializing in instant water heater control boards, offering both standard products and extensive customization services.We supports:
Hardware and firmware customization tailored to specific power ranges, sensor types, interface layouts, and communication protocols (including WiFi, Bluetooth, UART, RS485).
OEM/ODM services, helping clients integrate unique functions or adjust control algorithms to meet market demands.
Complete technical support, including design consultation, prototyping, debugging, and after-sales service to ensure smooth product development.
Strict quality management, with ISO9001-certified production, and products certified to CE, RoHS, and CCC standards.
Robust manufacturing capacity, capable of delivering small sample batches quickly as well as stable mass production, ensuring reliable supply chain for B2B buyers.

Extendable Solution Areas
1. After adjustment, the knob control solution can be developed;
2. After simplification, it can be changed to an indicator light display scheme;
3. Can be adjusted to gear control scheme according to market needs
4. The constant temperature parameters can be adjusted according to different heating elements, such as cast aluminum heating element, steel cup (copper cup, plastic cup) heating element, bare wire heating element, quartz tube heating element, etc;
5. Can be control by WIFI and OTA service;
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Solution Technical Highlights
                        
                    Meet EU energy efficiency standards, standby power less than 1W
                        
                    Can pass the EMC testing
                        
                    Wide voltage power supply, can be used for machines with AC 90V~260V
                        
                    High constant temperature accuracy +/-0.5°C, not affected by changes in water flow and voltage, constant temperature for 10 seconds
                        
                    Suitable for single phase and 400V AC machine
                        
                    Support a variety of connections, such as delta connection, Y-shaped connection, etc.
                        
                    Compatible with solar and heat pump water heater reheating
                        
                    When stop operation the Zero line and live line will be shut off both(for controller with pump)
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Related Solutions
We have a strong R&D and design team, especially in the field of instantaneous electric water heaters with unparalleled advantages and experience
        Get Started with Scheme Design + PCBA
We provide one-stop service of scheme design + PCBA, integrating design and manufacturing, which can ensure that our electronic control board perfectly carries our design scheme.
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