EPC-89S Single Pump Controller for Central Heating or Hot Water Systems

Intelligent Pump Management:

Automatically controls the connected water pump (either C.H. or H.W.) based on user-defined temperature setpoints to optimize system efficiency.

Smart Operating Modes

Manual Override: Provides direct manual control to turn the connected pump on or off for system testing or continuous operation (by pressing ⬛ and ⬇️ buttons together).
Anti-stop Protection: Automatically cycles the pump for 15 seconds every 14 days to prevent motor sticking and limescale buildup during the non-heating season.
Frost Protection: Automatically activates the pump to circulate water and protect the system if the sensor temperature drops below 5°C.
Overheat & Alert System: Integrated sound alarm which signals too high temperature on the boiler (above 90°C) and sensor diagnostic faults (E1: short circuit; E2: broken sensor).

EPC-89S Controller Interface and Port Connections

Advanced Protection & Safety

Anti-Stop Technology: Automatically cycles each pump for 15 seconds every 14 days to prevent motor sticking and limescale buildup.
Frost Protection: Automatically activates pumps to circulate water if the sensor temperature drops below 5°C.
Alert System: Integrated buzzer and visual display alerts for high-temperature events (>90°C) and sensor diagnostic faults.

Our Certifications & Compliance

E-Top Factory Certificates and Smart Protocols

Looking for a Dual-Pump Solution?

If you need to control both heating and hot water pumps simultaneously, check out our EPC-89D Dual Pump Controller or browse our full range of Pump Controllers.

Technical Specifications

Parameter	Specification Value
Power Supply	230V AC ±10% / 50Hz
Power Consumption	2W
Max load of the pump output	6A
Temperature Display	0 – 99°C
Pump on temperature setting range (C)	5 to +80°C
Pump off temperature setting range (U)	10 to +85°C
Sensor Range	-10 – 120°C
Working Temperature	-10 – +50°C
Product Compliance	CE (RED/EMC/LVD), UKCA, FCC, ETL Listed, EAC, CRA, WEEE, RoHS 2011/65/EU, REACH, EMC 2014/30/EU
Factory Quality System	ISO9001:2015, ISO14001:2015

EPC-89S Dimensions & Installation

EPC-89S pump controller dimensions and wiring layout

EPC-89S Installation Guide

Installation Note

Must be installed by qualified professionals in accordance with local and national electrical regulations.

Always disconnect main power before wiring or maintenance to prevent damage.

Troubleshooting (Alarms)

E1: Short circuit in the temperature sensor.

E2: Broken temperature sensor.

Note: For indoor use only. Keep in a dry environment.

Frequently Asked Questions

Q1: How does the EPC-89S pump controller optimize heating efficiency?

A: The EPC-89S optimizes heating efficiency by using precise temperature differential management to control your water pump (either C.H. or H.W.). The controller automatically activates or deactivates the pump based on your custom-defined temperature setpoint, preventing unnecessary energy waste and reducing fuel consumption.

Q2: What are the integrated safety protections of the EPC-89S?

A: The controller features comprehensive automatic protections to safeguard your system, including:

Anti-Stop Function: Automatically runs the pump for 15 seconds every 14 days during the non-heating season to prevent motor sticking and limescale buildup.

Frost Protection: Activates the pump to circulate water once the sensor temperature drops below 5°C to prevent pipe freezing.

Overheating Safety: Instantly triggers an acoustic sound alarm if the boiler temperature exceeds 90°C.

Q3: Can the EPC-89S control both C.H. and H.W. pumps at the same time?

A: No. The EPC-89S is a single-loop controller designed to control either a Central Heating (C.H.) pump or a Hot Water (H.W.) pump individually. If you need to manage both heating and hot water pumps simultaneously with priority control, we recommend our dual-pump controller model, EPC-89D.

Q4: What do the E1 and E2 error codes mean on the display?

A: These codes indicate specific sensor faults for quick diagnostic troubleshooting:

E1: Short circuit in the temperature sensor.

E2: Broken or open circuit in the temperature sensor.

Q5: Is the EPC-89S controller compliant with international quality and safety standards?

A: Absolutely. The EPC-89S is manufactured under strict ISO9001:2015 and ISO14001:2015 certified quality systems. The product carries CE, EAC, EMC, and RoHS compliance, ensuring complete safety and reliability for installers and homeowners.

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