Manual for H 6400 BM

Manual for H 6400 BM

Brand: Miele

Category: Oven

Document Type: Manual

Language: EN

Uploaded: Nov. 21, 2025, 8:24 p.m.

Warranty Information

In the UK, the appliance is guaranteed for 2 years from the date of purchase.

This manual provides operating and installation instructions for the Miele Microwave combination oven. It covers safety warnings, correct application, safety with children, technical safety, correct use, cleaning and care, and environmental considerations. It also details how to use the oven's various functions, settings, and troubleshooting guidance.

Troubleshooting and error codes

Problem Possible cause and remedy
The food is not sufficiently heated or is not cooked at the end of a set duration when using Microwave solo
  • Check that you remembered to restart the programme after interrupting a cooking process using microwave power.
  • Check that the correct duration was selected for the power level chosen when cooking or reheating with microwave power. The lower the power level the longer the duration.
Food has cooled down too quickly after being reheated or cooked in microwave mode. Microwaves cause food to heat from the outside first. This heat then moves towards the middle of the food. If food is cooked at a high power level it is possible that the heat may not have reached the centre of the food. Food may be hot on the outside but cool in the middle. When reheating food with different densities, such as plated meals, it is sensible to start with a low power level and select a longer reheating duration.
The oven lighting switches off after a short time. The oven lighting is set to switch off after 15 seconds (default setting). You can change the default setting for this (see "Settings - Lighting").
The oven lighting does not switch on. The halogen lamp needs replacing. Danger of burning. Make sure the oven heating elements are switched off and cool. Disconnect the appliance from the mains. The lamp cover consists of two parts: a glass piece and a mounting. Hold the lamp cover securely when removing it so that it does not fall. Place a tea towel over the floor of the oven and the open door to protect them. Remove the screw to the lamp cover using a T20 Torx screwdriver, and take off the cover. Do not touch the halogen lamp with bare fingers. Please follow the manufacturer's instructions. Pull the halogen lamp out. Replace it with a new halogen lamp (Osram 66725, 230 V, 25 W, G9). It must be thermally stable up to 300 °C. Replace the glass piece in the mounting, and refit the lamp cover. Make sure that the lug on the mounting is correctly located in the notch in the roof of the oven, then screw the mounting back into place. Reconnect the oven to the electricity supply.
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