Can a clogged drain line be the sole cause of the Toshiba VRF error code E04?

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Grade: Education Subject: Support
Can a clogged drain line be the sole cause of the Toshiba VRF error code E04?
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Yes, a clogged drain line is a very common cause for the E04 error. When the drain line is blocked, water accumulates and triggers the float switch or causes a pump malfunction, leading to the error.