Hot water & heating
No hot water, elements, thermostats and off-peak.
No hot water (electric storage system)
An electric storage hot water system has gone cold — no hot water at the taps. Usually the element, thermostat, supply, or (for off-peak) the tariff/timing.
Hot water runs out too quickly / not hot enough
There's some hot water but it runs out fast or never gets properly hot — often a partially-failed element, a thermostat set low, or a system being asked to do more than its size.
Off-peak / controlled-load hot water not heating
A controlled-load (off-peak) hot water system isn't being energised during its tariff window — the element and thermostat may be fine, but power never arrives at the right time.
Hot water system tripping the safety switch
The hot water system trips the safety switch — typically when it heats — pointing at an element leaking to earth or moisture in the system.
Instantaneous / heat-pump hot water — no power or fault light
An instantaneous electric or heat-pump hot water unit shows no power or a fault indicator and isn't heating — different from a simple storage element fault.
Electric wall/panel heater not working
A fixed electric heater (panel, wall, or in-slab) isn't heating — no warmth despite being switched on, pointing at the element, thermostat, controller, or supply.
Off-peak / controlled-load contactor not switching
The contactor that switches a controlled-load (off-peak) supply — for hot water, slab heating, or pool gear — isn't operating in its window, so the load never gets power.