Reliance hybrid water heater runs fan/compressor constantly but water is not getting hot enough

Safety first: Turn OFF power before cleaning coils or accessing sensors. Do not open the sealed refrigerant system.

Steps to check:

• 1. Check ambient conditions: Verify the room temperature is within Reliance’s recommended range for heat pump operation (often above ~45–50°F). In colder spaces, switch to hybrid or electric mode.
• 2. Clean air filter and coil: Remove and clean the air filter. Inspect the evaporator coil and gently clean dust and lint buildup.
• 3. Verify setpoint: Ensure the thermostat set temperature is not extremely high relative to ambient, which can make recovery slow.
• 4. Check tank sensors: Inspect and test tank temperature sensors for proper resistance. Replace faulty sensors that misreport temperature.
• 5. Call technician if needed: If performance remains poor after cleaning and sensor checks, a refrigerant or compressor issue may exist and requires professional service.

Note: In high-demand situations, using hybrid or electric-only mode may be necessary for adequate hot water.