Bosch CE025 User Manual (English)

Questions and Answers:

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Debbie TorresAug 11, 2025
Why does my Bosch CE025 Heat Pump unit turn off on high pressure control?
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  terrycaitlynAug 11, 2025
  If your Bosch Heat Pump turns off due to high pressure, it could be due to several reasons. In 'COOLING' mode, there might be a lack of or inadequate water flow, the entering water temperature might be too warm, or the condenser might be scaled or plugged. In 'HEATING' mode, there might be a lack of or inadequate air flow, the blower might be inoperative, or there might be a clogged filter or restrictions in the duct work. The unit might also be overcharged with refrigerant, requiring you to reclaim refrigerant, evacuate, and recharge with the factory-recommended charge. Finally, check for a defective or improperly calibrated high-pressure switch.
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joel92Aug 15, 2025
What to do if my Bosch CE025 Heat Pump blower operates but the compressor does not?
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  Jonathon BrownAug 15, 2025
  If your Bosch Heat Pump's blower is running but the compressor isn't, check the thermostat's settings, calibration, and wiring. Inspect for loose or broken wires at the compressor, capacitor, or contactor. Check the UPM board red default L.E.D. for a Blink Code. If the compressor is cool and the overload won't reset, replace the compressor. If the compressor motor is grounded (internal winding grounded to the compressor shell), replace the compressor and install a suction filter dryer if there's a compressor burnout. After the compressor has cooled, check the continuity of the compressor windings; if the windings are open, replace the compressor.
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Adam SmithAug 21, 2025
Why does my Bosch CE025 unit turn off on low pressure control?
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  Robin BennettAug 21, 2025
  If your Bosch Heat Pump shuts down due to low pressure, the suction pressure might be too low. In 'COOLING' mode, this could be due to a lack of or inadequate air flow, or the entering air temperature being too cold. The blower might be inoperative, or there could be a clogged filter or restrictions in the duct work. In 'HEATING' mode, it could be due to a lack of or inadequate water flow, or the entering water temperature being too cold, or a scaled or plugged condenser. The unit might also be low on refrigerant, so check for leaks, repair them, evacuate, and recharge with the factory-recommended charge. Also, check for a defective or improperly calibrated low-pressure switch.
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ryan67Aug 27, 2025
Why does my Bosch Heat Pump short cycle?
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  Frederick BlackwellAug 27, 2025
  If your Bosch Heat Pump is short cycling, it might be oversized, requiring you to recalculate heating and cooling loads. The thermostat might be installed near a supply air grill, so relocate it and readjust the heat anticipator. Also, check for a defective or improperly calibrated low-pressure switch.

Bosch CE025 Specifications

General

Brand	Bosch
Model	CE025
Cooling Capacity	2.5 kW
Operating Temperature Range (Heating)	-15°C to 24°C
Operating Temperature Range (Cooling)	46 °C
Power Input (Cooling)	0.6 kW