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Leave the repair of your Mercury package with confidence to the Tehran Technical Engineering Group of the online service, because this group, having more than 100 active and experienced technicians in the field of Mercury package repair, is ready to serve our dear customers 24 hours a day.

Mercury company is one of the reliable brands, which has performed well in the field of heating systems production. This company has implemented an intelligent troubleshooting system in its packages to help in troubleshooting its packages.
Error codes are displayed in different ways on different devices. In old devices, this was done by turning on the backlight or beeping. But in new generation heating systems that are often equipped with displays, error codes appear in English letters on the screen. One of the advantages of these codes over other methods is the possibility of transmitting more information about the error related to the type of problem or scope. its occurrence.

List of Mercury package errors:
Fix error code E0 of Mercury package:

When the error E0 appears on the display of the Mercury package, it indicates that the water pressure of the package inlet is less than 0.5.
Fix E1 error of Mercury package:

The error indicates that the formation of the flame in the package has been disrupted. The reason for the occurrence of this error code is that the gas does not reach the burner part of the Mercury package, and as a result, the flame will not be formed. Sometimes the reason for the E1 error code is a fault in the ignition sensor. To solve this problem, you should check the gas inlet of the building, and if the problem is severe, you should replace the ignition.
Fix E2 error of Mercury package:

The appearance of this error on the screen of the Mercury package indicates pump failure, formation of deposits in the secondary converter, blockage of the secondary converter path and closed radiator valves. To fix this error, you must double check these parts or with Call a professional package repairer.
Mercury package E3 error code:

This error code indicates that a fault has occurred in the switch or fan package. To fix this error code, you must check the water package fan and make sure that it is healthy, otherwise, you must seek help from a package repairer to repair or replace the part.
Fix error code E4 of Mercury package:

This error code indicates that the water inside the package has decreased and the pressure switch has detected this. To fix this error code, you must set the package pressure to one and a half. If the problem is not solved, the pressure part of the switch package must be replaced.
Fix error code E6 of Mercury package:

This error code shows that there is a problem with the hot water sensor of the package. Checking and diagnosing the need to replace the hot water sensor of the package is the responsibility of the package repairer only.
Fix error code E7 of Mercury package:

This error indicates that the heating sensor of the package is damaged and must be replaced.
Fix error code E9 of Mercury package:

This error indicates that your package is frozen. To fix the problem, you need to use an antifreeze.
Fixing error E10 of Mercury package:

This error indicates that the package converter is clogged
Fixing the Mercury package EC error:

This error indicates that the package board has a problem and has been disrupted.
Fixing the EL error of the Mercury package:

This error shows that there is a malfunction in the cold water inlet of the package.

Combo DC28 model, Mercury package:
Mercury package CO error code:

Description of the error: Defrosting mode appears — the anti-freeze switch is off and the temperature of the environment where the device is installed is low.
Mercury package CS error code:

Error description: The return sensor of the heating circuit is broken — the sensor is broken or not installed properly, but the device works.
Mercury package DH error code:

Error description: There is no spark or no flame — the gas valve is closed — the gas pipe is blocked or blocked.
Mercury package Fy error code:

Description of the error: the fan stops after a few seconds — the chimney outlet is blocked — the chimney safety switch is broken — the hose of the chimney safety switch is out.
Mercury package GS error code:

Description of the error: the burner is turned on without water passing through the heat exchanger — the pump does not work — the valves of the heating path are closed or blocked — check the steering control failure.
Mercury package HS error code:

Description of the error: the return sensor of the heating circuit is broken — the sensor is broken or not installed properly, but the device works.
Mercury package Sy error code:

Error description: there is a problem with the hot water output — the hot water sensor is broken or not installed properly.
Mercury package error code yL:

Error description: The device does not work — the water pressure is below half bar.

Mercury package error code Combo ND28 model:
Mercury package CO error code:

Defrost mode is displayed. The frost protection switch is off and the ambient temperature of the device installation is low.
Mercury package CS error code:

The return sensor of the heating circuit is broken or the sensor is broken. Or not installed well.
Mercury package DH error code:

There is no flame or no spark at all, or the gas does not enter the device, or the gas inlet pipe is blocked.
FY error code of Mercury package:

The device’s fan only works for a few seconds and then turns off. In this case, either the exhaust pipe of the chimney is blocked or the safety switch of the chimney is broken. Or the chimney safety hose is out of place.
Mercury package GS error code:

When the burner starts without water, or the pump does not work, or the water valves are blocked, then check the steering control.
Mercury package HS error code:

The heating circuit return sensors are not working well. In this case, the sensors are either broken or not installed well, but at the same time the device works.
Mercury package SY error code:

There is a problem with hot water output. The hot water sensor is broken or not installed properly.
Mercury package XL error code:

The device does not work at all and the water pressure is less than half a bar.

Errors of the Megatherm Mercury package:
Error code E1 of Mercury megatherm package:

Error description: Failure to form or detect flame.
Error code E3 of Mercury megatherm package:

Error description: NTC heating sensor.
Error code E4 of Mercury megatherm package:

Error description: Chimney blockage — smoke switch pressure error.
Error code E5 of Megatherm Mercury package:

Error description: Chimney blockage — smoke switch pressure error.
Error code E6 of Mercury megatherm package:

Error description: The flame sensor is defective.
Error code E7 of Mercury megatherm package:

Description of the error: the temperature of the heating circuit increases.
Error code E8 of Mercury megatherm package:

Description of the error: The temperature of the heating circuit has increased to more than 85 degrees.
Error code E9 of Megatherm Mercury package:

Description of the error: increasing the temperature of the heating circuit to more than 95 degrees (activation of the thermal switch).
EC error code of Megatherm Mercury package:

Error description: sockets on the board or control board.
Error code: EE Megatherm Mercury package:

Error description: NTC sensor of hot water heater.
EF error code of Mercury megatherm package:

Description of the error: The temperature of the spa used is more than 85 degrees.
EL error code of Mercury megatherm package:

Description of the error: There is a problem with the incoming cold water sensor.
Error code E0 of Mercury megatherm package:

Error description: water pressure drop in the heating circuit.