blomberg lrf285411w washer dryer truning ON but no door lock detected
Hi
My blomberg lrf285411w is turning ON but the door lock is not happening after physically closing the door. (Door lock icon not appearing in the display unit)
I have replaced a door-look module with the same part number, but the issue remains as same.
I ve opened the main board but no sign of burn marks or destroyed components is visible.
How can I fix this issue? is it an issue of an electronic component in the main board?
pls help because I am stuck
Solution Summary
AI-generated from this discussion
This thread was marked as solved. Here's a summary of the problem and the fix, generated from the discussion below.
Blomberg LRF285411W powers up but does not detect door lock
- The problem
- A Blomberg LRF285411W washer dryer turns on, but after the door is physically closed the door lock does not engage and the door lock symbol does not appear on the display. The door lock module was replaced with the same part number, but the fault remained.
- Likely cause
- Most strongly supported diagnosis is an electrical or wiring fault to the door lock circuit, or possibly a fault on the main PCB. A worn or broken door latch was also suggested as a possibility if it is not properly activating the lock, but this was not confirmed.
- What fixed it
- No confirmed repair was recorded. The accepted advice was that if the door lock has already been replaced and there is nothing obvious visibly wrong, the remaining likely causes are wiring or the main PCB, but PCB replacement would be a gamble without further proof. Further diagnosis should be carried out by a suitably qualified appliance engineer.
- Checks to try
- Replaced the door lock module with the same part number
- Main board opened and checked visually for burn marks or damaged components
- Checked the 3 wires coming from the door lock latch
- Parts or tools mentioned
- Door lock module
- Main PCB
Safety: Further diagnosis should be carried out by a suitably qualified appliance engineer.
3 Answers
Hi. I get this a lot. Door lock appears faulty but replacing the door lock doesn't fix it. I can only assume it's an electrical/wiring problem, or maybe a fault on the PCB. The difficulty with the PCB, is that there is no way to test one. So if there isn't anything obvious, then it's a total leap of faith to replace one - and a big financial gamble.
The PCB has many components, any one of which could be faulty with no visible sign. An electronics expert would know how to test individual diodes, resistors, capacitors, but appliance engineers do not have any knowledge, or test equipment for them. We are only taught to replace the whole thing. This is totally wasteful, but it's always been the case and has never changed.
So even an experienced white goods appliance engineer never knows for certain if the PCB is faulty. They just eliminate other faults and then fit one and hope if fixes the fault.
Need Professional Help or Spare Parts?
Alternatively, there's a possibility that something has broken or worn on the door latch so that when the door is being closed it is not activating the door lock. If the door latch still has the spring tensioning it and looks OK and the door seems to latch normally, it may not be the issue.
Need Professional Help or Spare Parts?
Thanks for all the comments. I feel there might be an issue with the Main PCB because I have checked the 3 wires coming from the door lock latch and changed the module, too.
Does anyone know anything about the main PCB cct diagram?
If I have it I can check every component slowly.
Please anyone know how to get that ?
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