Oven light does not turn on, but oven heats and other functions work normally.

Safety first: Turn off power at the breaker and allow the oven to cool before replacing the bulb. Glass can be hot and fragile.

Step-by-step checks:

• Replace bulb: Remove the glass lens cover inside the oven (usually twists off). Replace the bulb with the correct Haier-specified oven lamp (high-temperature rated).
• Inspect socket: Check the lamp socket for discoloration, burning, or loose contacts.
• Test operation: Restore power and test the light button. If the new bulb does not light, continue.
• Check wiring: With power off, inspect wiring from the socket to the control board or light switch.

When to replace parts: Replace the oven lamp first. If the socket is damaged, replace the lamp holder assembly. If wiring and socket are good but no power is supplied, the control board light relay may be faulty.