The Panasonic WH-CME5 is the single-phase Control Module for the Aquarea M Series T-CAP R290 range, matched to the 9 kW and 12 kW single-phase outdoor units. It upgrades a standalone outdoor unit to enhanced functionality — providing the centralised electrical interface, backup resistance management and communication link needed for two-zone control, buffer tank integration and bivalent boiler backup.
Single-Phase
Electrical supply
9 & 12 kW
Compatible capacities
Up to 3 kW
Backup resistance support
Wi-Fi Built In
Connectivity
2-Zone
Enhanced capability
When to choose the Control Module over the simple controller
Choose the WH-CME5 Control Module where your system needs two-zone heating control, a buffer tank connection, solar integration, or bivalent boiler backup. For straightforward single-zone installs, the simpler CZ-RTW2TAW1C wired controller is sufficient on its own.
Match the module to your outdoor unit's phase
The WH-CME5 is for single-phase 9 kW and 12 kW outdoor units only. If your outdoor unit is three-phase, you need the WH-CME8 (9–16 kW) or WH-CME8L (20–30 kW) Control Module instead — see our matching listings.
Key features
Centralised electrical management
Generates the backup electrical resistance supply, manages the system's main power feed, and handles communication with the outdoor unit — all from one integrated module.
Supports backup resistance up to 3 kW
Compatible with backup heating resistances up to 3 kW, sized to the module's single-phase electrical rating.
Built-in Wi-Fi adapter
Connects directly to Aquarea Smart Cloud, Panasonic Comfort Cloud, and Aquarea Service Cloud — no separate network adaptor accessory required.
Two-zone control
Unlocks independent control of two heating zones — for example underfloor heating and radiators running at different flow temperatures.
Buffer tank & bivalent integration
Supports connection to a buffer tank and bivalent boiler backup configurations, extending the system design options beyond a straightforward single-zone install.
Regulatory compliant electrical interface
Designed to help installations comply with low-voltage electrical installation regulations, ensuring a safe, correctly-rated connection between indoor and outdoor units.
Technical specification
| Model code |
WH-CME5 |
| Electrical supply |
Single-phase |
| Compatible outdoor unit capacities |
9 kW and 12 kW |
| Compatible outdoor units |
WH-WXG09ME5, WH-WXG12ME5 |
| Backup resistance support |
Up to 3 kW |
| Recommended fuse |
16 A |
| Minimum power cable section |
3 × 1.5 mm² |
| Connection cable to outdoor unit |
2 × 0.75 mm² |
| Connectivity |
Built-in Wi-Fi adapter — Aquarea Smart Cloud, Comfort Cloud, Aquarea Service Cloud |
| Enhanced functions supported |
Two-zone control, buffer tank connection, bivalent boiler backup |
| Compatible remote controller |
CZ-RTW2TAW1C |
What's in the box
- 1 × Panasonic WH-CME5 single-phase Control Module
- Manufacturer installation instructions
What you'll also need (sold separately)
- Matched M Series T-CAP outdoor unit — WH-WXG09ME5 or WH-WXG12ME5
- CZ-RTW2TAW1C simple wired controller (room interface)
- DHW cylinder — Panasonic stainless or enamelled tank, or suitable third-party cylinder
- PAW-3WYVLV-HW 3-way valve for DHW switching
- Buffer tank and associated sensor, if included in your system design
Frequently Asked Questions
Is this compatible with my outdoor unit?
The WH-CME5 is matched specifically to single-phase 9 kW and 12 kW M Series T-CAP outdoor units (WH-WXG09ME5, WH-WXG12ME5). Check your outdoor unit's phase and capacity before ordering.
What does the Control Module actually do?
It provides the centralised electrical interface between the indoor and outdoor units — managing backup resistance, the main power feed, and communication — while unlocking enhanced functions like two-zone control that aren't available with the simple wired controller alone.
Do I still need the simple wired controller as well?
Yes — the Control Module handles the electrical and hydraulic management side, while the CZ-RTW2TAW1C (or an equivalent room controller) remains the user-facing interface for day-to-day operation.
What if my outdoor unit is three-phase?
Use the WH-CME8 (for 9–16 kW three-phase units) or WH-CME8L (for 20–30 kW three-phase units) instead — the WH-CME5 is single-phase only.
Do I need to be MCS-registered to install this?
The system can be installed by any competent heating engineer, but to claim the UK Boiler Upgrade Scheme grant the install must be carried out by an MCS-certified installer.
