Vaillant ecomax pro 28 manual

Flow or back flow NTC has short circuited, or an electronic fault. Electronic system temperature too high. This can happen because of an external heat source or an electrical fault. Electronic fault in the flame system. Lack of gas, a fault with the ignition or flue — may need to adjust the gas valve or replace a defective electrode lead.

Ignition fault. The system has suffered a fault due to overheating. Your flow NTC has developed a fault. Check the polarity of your system. Pump-related faults — the pump could have failed, it may have over run or there could be an issue with the airlock. The pilot flame has failed. There is insufficient water in your system.

A blockage in the appliance is preventing the system from flowing as it should. The appliance is blocked because of a water deficiency.

Heating issue, no heat demand. Fan start-up error. Pump flow error. Heating mode error — ignition problem. Heat mode — burner on error. Heating mode — fan overrun error. Heating mode — pump overrun error. Heating remaining cut off for XX amount of time.

No heat demand summer operating mode. Heating mode frost protection error. Hot water requirement error. Hot water handling pump flow error. Hot water operation burner is on. Service message quantity of circulation water. Flow temperature sensor interruption. Return temperature sensor interruption. Flow NTC short circuit. Return NTC short circuit. Safety switch off temperature limiter.

Safety switch off low water pressure. Safety switch off temperature difference too great. Safety switch off temperature is rising to fast. Safety switch off flue gas temperature too high. Error with gas valve — possible no function. Safety switch off flame simulation. Failure during start up — ignition unsuccessful to start. Failure during operation — re-ignition unsuccessful. Fan error. Error with gas valve regulation. Error with gas valve — switch off delay. Electronic temperature error could be overheating due to external influences.

Electronics flame signal error. Unstable flame signal error air in gas. Invalid device specific number DSN. Flow NTC error — flow temperature sensor signal constant value.

Flow return NTC error — temperature difference too great. Water pressure sensor signal in the wrong range, it is too low. Water pressure sensor signal outside correct range, the sensor signal is too high. Error with pressure — no pressure change detection when starting the pump. Overheating protection on — primary heat exchanger has responded. Flue non return flap condensate pump error. Interruption to DHW outlet sensor at external controller.

Flow and or return temperature sensor error. Error with flow and return temperature, sensor incorrectly fitted. No communication with the PCB. Heating mode error — no heat demand. Heating mode fan start-up. Heating mode error — water pump running. Heating mode — ignition sequence error. Heating mode — burner ignited. Heating remaining cut off time xx minutes.

Hot water demand via impeller sensor. DHW mode fan start up error. DHW mode ignition error. The manuals title will indicate if they are installation,user manual or other types of manuals or resources. In due course we will provided the ability to search on multiple terms and by GC no. All repair tasks should be carried out by qualified trades people.

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Would you like to receive an email when new answers and questions are posted? Please enter your email address. Vaillant ecoTEC pro 28 Manual. Get this manual by email. F or the owner. W all hung r oom se aled f an assist ed condensing boiler s. Need help? Post your question in this forum. Storage of the documents. Symbols used in this manual. CE marking. Data badge. Setup and adjustments. What to do in an emergency.

Safety instructions. Modifications in and around the boiler. Factory guarantee. Two 2 year guarantee for ecoTEC plus appliances. Overview of controls on ecoTEC plus. Overview of controls on ecoTEC pro. Initial checks before turning on. Opening the service valves. Checking the system pressure. Turning the boiler ON.

Domestic hot water with ecoTEC combination boilers. Setting the water temperature. Switching the warmstart function on and off. Drawing hot water ecoTEC combination boilers only. Heating operation. Setting the maximum radiator temperature control. Switching off heating summer operation. Setting a room- or outside temperature controller. Status displays. Problems due to low system water pressure. Ignition problems. Flue problems. Turning off the boiler.

Frost protection. Maintenance and customer service. The boiler will operate automatically to provide domestic hot water whenever a hot water tap is opened, and automatically adjusts to meet the demand for both central heating and domestic hot water in the most economical way.

To ensure compliance with this new standard the following details are included. The following information is intended to help you throughout the boilers entire instruction pack. We assume no liability for any damage caused by non-observance of these instructions. Vaillant Ltd. At the rear of the installation manual, you will find a Benchmark gas boiler commissioning checklist. It is very important that this is completed correctly at the time of installation, commissioning and handover to the user.

Other instruction supplied with this appliance For the end user Short operating instructions ecoTEC plus only no. If, after reading these instructions, you have any questions on the operation of the boiler, please contact either your installer or Vaillant Technical Department.

If you move please pass on the documents to the buyer. Danger Immediate risk of serious injury or death. Caution Potentially dangerous situations for the product and environment. Note Useful information and instructions. Instructions for use ecoTEC 1. In the U. Registered installers undertake the work to a safe and satisfactory standard. If the boiler is installed in a compartment do not obstruct any purpose provided ventilation openings, and do not use the compartment for storage purposes.

Danger Inflammable mixtures of gas and air may explode.