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Heat Pump Controller 230V

VAT included

The EVCO EV3B94N9 is a 115V - 230V digital heat pump controller with a LED display and is capable of controlling Domestic Hot Water and Swimming Pool Heat Pumps. Configurable for different applications. Supplied with 3 x 1.5m NTC Probes


The instrument has 3 x Temperature inputs, 1 x 16A (MAX 10A Resistive) Compressor Relay, 1 X Fan Relay, 1 x Heating Relay, 1 X Defrost Relay and 1 x Digital input.


Technical Details

Mounting: Panel Mount

Housing: Self Extinguishing Plastic

Frontal Protection Rating: IP65

Size: 74 x 32mm (L X H)

Panel Cut out: 71 x 29mm

Display: 3-digit red LED with 1 decimal point

Power supply: 115 -230 VAC 50hz 3VA

Temperature range:

Depending on Probe Type

Analogue Inputs: 2 (Digital Input or 3rd Probe)

Probe (NTC or PTC) Tank 1 Temperature

Probe (NTC or PTC) Tank 2 Temperature

Probe (NTC or PTC) Evaporator

Digital Input: 1 Digital Input (Available if 2nd Probe not used)

Input 1 - Solar Panel 

Input 2 - HP/LP/Flow

Relay Outputs:

Relay 1 - Fan 5A (NO Contact)

Relay 2 - Compressor 16A Resistive (N/O contact)

Relay 3 - Heat 8A (NO Contact)

Relay 4 - Defrost 5A (N/O contact)

Control Type: On/Off

Defrost:  Electric / Hot Gas / Compressor Off / Hot Gas Pressure Balancing (Programmable)

Energy Saving Function: Yes

5 Items

Data sheet

Supply Voltage
Mounting Type
No of Sensor Inputs
Sensor Types
No of Relay Outputs
Heat Pump (Hot Water & Pool)


EV3B94N9 Manual

Download (406.4KB)