Heat pumps · Error codes · Octopus Energy
POD-FLASHING-REDOctopus Energy · Cosy (Cosy Octopus heat pump)
POD-FLASHING-RED on an Octopus Energy Cosy: Low battery
Short answer
On an Octopus Energy heat pump, POD-FLASHING-RED means: Low battery. The heat pump keeps running.
Reviewed 23 September 2026 · 1 source
What it means
The manual says: Low battery.
Part involved: Cosy Pod batteries (2x AAA).
Likely causes:
- Batteries depleted.
Is it safe?
| Does the heat pump stop? | No |
|---|---|
| Severity | Information only |
| Engineer needed? | No |
The heat pump keeps running.
Resetting itself: yes (after battery change).
Manual reset: no.
What you can check
- Replace with two AAA 1.5 V alkaline batteries (manufacturer says do not use rechargeables).
What the engineer will check
- None normally.
Who to ask for: Manufacturer-employed engineer (Octopus Energy Services) - R290/ heat pump.
Certification: Octopus-authorised engineer; F-gas/ R290 flammable refrigerant competence for refrigerant work.
What you might notice
Sources
- Get to know your Cosy heat pump (user guide) v20.2 ↗ · 20.2 (file: Get_to_know_your_Cosy-20.2-internal.pdf) · page PDF p.18 (printed 17); troubleshooting PDF p.25 (printed 24) · Reviewed 23 September 2026
A code explains what the controller detected, not a confirmed root cause.
Reviewed: 23 September 2026