I had the same problem with my fan and solved it with a reset. The reset button is on the back of the remote next to the dip switches. You have to take the battery cover off to see it.
Turn on the fan with heat, even though the heat doesn't work. Then, leaving the remote on, turn off the fan at the wall switch (or circuit breaker box). Wait a few minutes. Then turn on the power and within 30 seconds, press the reset button. You should be able to see a countdown from 5 to 0 on the remote screen.
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I had the same problem with my fan and solved it with a reset. The reset button is on the back of the remote next to the dip switches. You have to take the battery cover off to see it.
Turn on the fan with heat, even though the heat doesn't work. Then, leaving the remote on, turn off the fan at the wall switch (or circuit breaker box). Wait a few minutes. Then turn on the power and within 30 seconds, press the reset button. You should be able to see a countdown from 5 to 0 on the remote screen.
Once I did this the heat started working again.