My Zeroth unit is not producing any hot water, what could it be?

Troubleshooting: No Hot Water

If your Zeroth unit is not producing hot water, there are a few simple checks you can carry out before seeking further assistance.

Initial Checks

1. Verify the unit has power
   • Is the screen lit up?
   • Is the isolation switch turned on?
   • Has a fuse tripped on the consumer unit/fuse box?
2. Confirm the system is set to heat water
   • Ensure the thermal system is switched on
3. Look for warning messages
   • If you see the “System Fault Contact Support” message, further guidance can be found here: Zeroth Fault Message Article

Applicable models:

ZHP4-180C, ZHP4-180C-01, ZHP4-180H, ZHP4-180H-01, ZHP6-180C, ZHP6-180C-01, ZHP6-180H, ZHP6-180H-01, ZHP9-180C-01, ZHP9-180H-01