Alpha tankless water heater cycles on and off rapidly with small hot water draws.

Safety: No internal combustion work is required for basic checks, but always follow general precautions.

• Increase flow: Open the hot tap more to exceed the Alpha minimum flow rate. Avoid using only trickle flows.
• Adjust fixtures: Replace extremely low-flow aerators or showerheads with models compatible with tankless heaters.
• Check flow sensor: Clean or replace the Alpha flow sensor if it is sticking.
• Consider recirculation: For frequent small draws, consult Alpha documentation about recirculation options.

If cycling persists, have a technician verify configuration and sizing.