Hephaestus boiler: errors and malfunctions, decoding and repair

Do you operate gas heating equipment? Then you know that even reliable units can fail. If the Hephaestus boiler displays an error code, then there is a problem in the system. The protective automation sends a signal to the control module, which displays a code on the display. Each character set represents a specific problem. What? We have detailed in the table.

Features of operation of the Gefest gas boiler

The equipment is represented by two series: Star and Econom. Power ranges from 16 kW to 32 kW. These are dual models. The heating heat exchanger is made of copper in the form of a curved tube. The secondary radiator for hot water supply (DHW) is also copper. But its design consists of several plates.

The steel burner is ignited by a piezoelectric element. The closed combustion chamber turns on the fan. It forcibly removes carbon monoxide. A coaxial chimney is connected to the chamber. It consists of two tubes, through one of which smoke is removed, and through the other air enters to maintain the flame. The chimney is led through a hole in the wall.

The circulation pump has three adjustable speeds. Includes air vent. Therefore, air jams in the system are extremely rare.

A 6 liter membrane tank is part of the design. It accepts excess liquid when heated. Safety automation protects the user from emergencies.

Errors and malfunctions

As soon as the self-diagnosis system displays an error code, rule out a system failure. To do this, restart the boiler. After turning it back on, check if the icons light up again or not. If yes, then look at the instructions or study our table.

Malfunction codeWhich meansHow to fix it yourself
Error E1The water pressure in the circuit has dropped.
  • Check pipes, radiators, connections for leaks. If you find damage, seal it with plumbing tow.
  • Clean filters and pipes from blockage.
  • Check the circulation pump. Adjust the speed, tighten the contacts, replace the faulty elements.
  • Turn on the drink. Add coolant to the circuit until the pressure gauge shows a normal value.
Error E2Problems with ignition and maintaining the flame.What to do:
  • Diagnose the solenoid valve, its wiring and contacts.
  • Clean the burner from dust and soot. Inspect the ignition electrode. It should be located at a distance of 3 mm from the burner.
  • Check the piezo ignition button, its contacts with the rest of the system.
  • Lastly, inspect the control module.

Install new elements in place of broken parts.

Error E6Problems with the removal of combustion products.How to proceed:
  • Make sure the chimney pipe is installed correctly. Clear the hole of blockages. Check for draft by holding a lit match up to the control window. If the flame deviates to the side, then the air is supplied normally. If it burns steadily, there is no traction.
  • Diagnose the operation of the fan, its contacts. Clean the blades of dirt, soot, soot. Replace defective items.
E7The overheating protection (coolant temperature sensor) has tripped.

First of all, check the temperature sensors and their connections.

If overheating really happened, check:

  • The amount of coolant in the system. If it is too low, turn on the make-up.
  • Heat exchanger. If its tubes are clogged with scale, remove plaque with reagents. To do this, remove the assembly and pump the reagent through the coil.
  • Adjust the heating temperature on the thermostat.
HERThe user entered erroneous numbers.Recheck the specified values.

Other faults

If you occasionally use the boiler, the pump may not start after a long period of inactivity. In this case, remove its plug and turn the shaft counterclockwise. Restart the boiler.

To avoid scale accumulation in the heat exchanger, it is recommended:

  1. Install magnetic water softeners.
  2. Do not use a heating temperature above 55 degrees, since it is then that scale begins to actively deposit.

Control the operation of heating equipment, conduct timely technical inspections.

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