Reyds.Heat pumps · Boilers · Steam

Hot water systems · Priority

5 000 Litre Geyser Not Heating

A large storage geyser is not reaching temperature or recovers far too slowly.

This fault is normally treated as priority work because the plant is still running but is damaging itself or wasting energy while it does.

Where a site runs on borehole water, hardness and iron content shorten service intervals considerably and are worth testing before setting a maintenance plan.

Equipment
Hot water systems
Priority
Priority
Call
069 268 0988

What we find

Likely causes

  • Part of the element bank failed
  • Contactor or timer keeping elements off-line
  • Load shedding control limiting heating windows
  • Thermostat or probe misreading
  • Heat source coil scaled or air-locked

Test sequence

How we diagnose it

  • Current draw per element circuit
  • Contactor and timer function test
  • Probe calibration against a reference
  • Coil delta-T measurement

Coverage

Attendance by area

FAQs

Frequently asked questions

What causes 5 000 litre geyser not heating?

The usual causes are part of the element bank failed, contactor or timer keeping elements off-line, load shedding control limiting heating windows, thermostat or probe misreading. Which one it is can only be confirmed by measurement, not by symptom alone.

How do you diagnose it?

Current draw per element circuit; Contactor and timer function test; Probe calibration against a reference; Coil delta-T measurement. The readings are recorded so the repair decision is based on data.

Can I keep using the system in the meantime?

Usually yes, for a short period, but efficiency and component life are both being lost while the fault persists.

Where do you attend this fault?

Across Johannesburg, Ekurhuleni, West Rand, Midrand, Centurion and Pretoria.

Get 5 000 litre geyser not heating diagnosed

Priority attendance across Johannesburg, Ekurhuleni, West Rand, Midrand, Centurion and Pretoria.