How to repair a dishwasher that won't start?

How to repair a dishwasher that won't start?

Hong Kong Junhong Electrical Appliance Repair Center received a call from a restaurant owner in Central. The customer described that his Miele dishwasher suddenly stopped starting. Junhong immediately dispatched technicians to repair the problem. In fact, for commercial dishwashers, as long as they pay attention to maintenance and cleaning, the failure rate can be reasonably reduced. Let's take a Miele commercial dishwasher as an example to talk about common faults and solutions.

1. Why does the commercial dishwasher suddenly not start?

When a commercial dishwasher suddenly does not start, you must first use its drainage function to drain the water, and then conduct professional troubleshooting and pay attention to the use of professional tools and good security. The following are the following reasons why commercial dishwashers do not start up: Troubleshoot the process at startup.

(1) When repairing a dishwasher, first use a multimeter to measure the power supply voltage, and then gradually measure the voltage resistance of the power cord in order to determine whether it cannot start due to an open circuit or short circuit.

(2) Both domestic and commercial dishwashers have safety settings. If the door of the dishwasher is not closed tightly, it will not start. However, this time it was found that the door panel of the dishwasher was obviously loose. After disassembly and inspection, it was found that the door lock mechanism was faulty. , causing the door closing signal to be unable to be sent to the console. This problem can be solved after replacement.

(3) If the door lock is not faulty, check the console of the commercial dishwasher and use a multimeter to test the main board of the panel to ensure that the panel control function is effective and that there is no local burnout.

2. Commercial dishwasher drains slowly

In fact, we occasionally encounter drainage problems when repairing dishwashers. The larger the capacity of a commercial dishwasher, the greater the water consumption and the frequency of drainage. However, many users ignore the drainage situation when using commercial dishwashers, so the next step is to Let’s talk about solutions to poor drainage in commercial dishwashers.

(1) When servicing a dishwasher, the first thing to check is the water pump, because many catering institutions do not have time to operate and clean the drain port of the dishwasher. Therefore, the drain pump may be clogged without knowing it. By checking the drain pump port You can confirm whether it is blocked.

(2) Check the drainage pipes and drainage valves. First make sure that the drainage pipes are not blocked, and then check if there are any cracks. If there are cracks, overflow will occur during daily use, and then check the drainage valves, as previously repaired by Hong Kong Junhong Electrical Appliance Repair Center A Siemens dishwasher encountered a damaged drain valve, and later repaired it by replacing the all-copper drain valve.

The above introduces the common phenomena and solutions when repairing dishwashers. Pay attention to cleaning and maintenance when using the dishwasher in daily use, and it has waterproof and self-cleaning functions. These must be used regularly, so as to reduce the failure rate and improve commercial washing. The service life of the disc drive.