Here is a list of the fault codes that occur for a Worcester Bosch locking error, most of these are fixed by the reset button with the exception of B7. I call it in after the unit purged on U9 code on teh display and then went cold. There is a maximum temperature of 105C, this means that the heat exchanger has exceeded this. I have a 2yr old Worcester Bosch Greenstar CD30I which has just started playing up and the Worcester engineers is strugling to explain it. Boiler needs to be left for half an hour then cools down, but doesn't always give me hot water at that point. During operation there has been a loss of flame signal, The established flame has been extinguished which could be caused by moisture in the stump or a strong wind into the flue, During the first 4 seconds of the ignition period a flame was not established, Too many short burner starts without confirmation, The pump is not detecting water, you need to check the pressure gauge and repressurise to 1 bar, Running in air or the pump could be stuck, Check the pressure gauge and re pressurise to 1 bar as there is little or no water in the system, After ignition no ionisation has been detected. Has a fault developed on your Worcester Bosch Boiler? Step Check Action; 1. This is usually an issue you can fix yourself with some warm (not boiling) water poured over your condensate pipe wherever it has frozen. Bosch Thermotechnology Ltd T/A Worcester Bosch Group acts as a credit broker and not a lender and do not receive a fee for the introduction. Got an error with your Worcester Bosch boiler but it doesn’t quite equal up to or isn’t displaying an error code? Worcester Bosch Fan problems - Duration: 3:35. Worcester Bosch errors Locking error According to Worcester Bosch, the EA 229 boiler fault relates to a loss of flame during operation. - Duration: 12:59. Worcester Bosch generally have good warranties, very often stretching to 10 years (like our Viessmann Vitodens 050-W or Viessmann Vitodens 100-W). A7. Worcester Greenstar 27cdi Combi. Ark Heating Solutions covers are accredited Worcester Bosch installation experts and trusted boiler, heating and plumbing experts. Worcester Bosch Fault Code U9 the way forward. The boiler blocks at 4 attempts of ignition before going to locking fault. You should first try to reset the boiler first, hold the reset button for 5 seconds. You’ll be surprised how many errors can be fixed by simply resetting the boiler. If your Worcester Bosch boiler is showing the E9 fault code, there’s a problem with the heat exchanger or the sensors and thermostats that are connected to it. Very rarely though, there can be problems. Why is my Worcester Bosch boiler flashing? Test the electrical circuits by checking for short circuits, continuity (earth) and resistance (to earth). Look at page 11 of the service book and you can adjust the max heat output on CH or HW. However for reference here are some of the most common boilers and their series: Now the bit you’ve been waiting for. Here is a list of potential error/fault codes and the action you'll need to take. If your Worcester boiler is leaking, this can cause low pressure and the boiler to … 201 O. Boiler in hot water mode. After a defined period of time there is no airflow, The fan is not running or the airflow has been blocked, Sensor wet or damaged (the boiler will block for 300 seconds before this condition), Sensor disconnected or damaged (the boiler will block for 300 seconds before this condition), 110C temperature limit has been exceeded on the primary flow sensor. Unfortunately, if the leak is within your boiler, there is a likelihood that there is a part that needs replacing. 8 Common Worcester Boiler Faults #1 – Blocked Condensate Pipe. The water will then be hot and boiler be be in working order but when left for a few hours or over night the pressure drops again and have no hot water. The comprehensive list of Worcester boiler error codes. Let us find you the best price using the form below: Copyright © 2020 – Guides4homeowners.co.uk. C1. Condensate pipes usually become blocked when they freeze during the winter months. Display goes rapidly from 60 to 99 then onto U1 to U9 error codes. 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