Article reference KA-02102
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
- 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?
- Confirm the system is set to heat water
- Ensure the thermal system is switched on
- 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