Error Code E4 on the Rheem Heat Pump signals a malfunction within the compressor or associated temperature sensing components. As a safety measure, the system reverts to electric backup heating mode.
Immediately turn off the electrical supply at the isolation switch and ensure all hot taps are closed. Internal inspection and specialist repairs will be required. Please contact Hilton Plumbing to safely identify and rectify the fault.
Book online or call us directly at 1300 872 343.
