Routes outdoor heat-exchanger air through the wall openings, adapters and external louvers of a single-package system.
MONOBLOCK REFERENCE
Ephoca / INNOVA
AIO all-in-one heat pumps / optional ERV
Ephoca has returned to the INNOVA name. AIO equipment is a single-package heat pump with wall air passages, not a conventional mini-split with an outdoor condenser and field-installed refrigerant lines. Choose wall-mounted, ceiling or vertical-stack documentation, generation and installed accessories separately.
Market: North America; Ephoca installed base · Editorial review: 2026-09-30
Get the matching documents
Record indoor and outdoor model numbers (or the single monoblock model), serials, refrigerant, controller and installed accessories. Match installation and service manuals, approved combinations and fault tables. A similar badge or corporate relationship does not establish compatible parts.
Read causes before replacing parts
The articles explain physical failure paths shared by this equipment class. They do not supply universal Ephoca / INNOVA fault codes, terminal assignments or test values. Verify applicability to your model. Optional systems such as ERVs and condensate accessories apply only when installed.
Components and possible causes
Manages water within a single-package heat pump through the model’s drain arrangement and any fitted disposal accessory.
Requests operating mode, setpoint and supported features through local, wired, wireless or optional thermostat interfaces.
Converts the supply into the controlled motor power used by variable-speed compressors. Input supply, DC link, output module and cooling are distinct diagnostic stages.
Provides room, coil, piping, outdoor-air and discharge-temperature inputs used for demand, protection and refrigerant control.
Moves air across indoor and outdoor coils using model-specific motor drives, feedback and air-direction controls.
Manages frost removal and cold-weather heating through coordinated sensing, compressor control, fans and refrigerant routing.
Provides the installed system’s specified outdoor-air ventilation and energy-recovery function where an ERV module is fitted.