How to troubleshoot a Bosch Heat Pump that does not run?
If your Bosch Heat Pump isn't running, first ensure the power supply is on by closing the disconnect. If that doesn't work, check for a blown fuse or tripped breaker and replace or reset it, making sure fuses are the correct size. Finally, verify the voltage supply; if it's below the minimum specified on the unit's data plate, contact your local power company.
What to do if my Bosch Greensource TW122 Heat Pump turns off due to high-pressure control?
If your Bosch Heat Pump shuts off due to high pressure, the discharge pressure might be too high. If in cooling mode, check for lack of water flow, excessively warm entering water temperature, or a scaled/plugged condenser. If in heating mode, check for inadequate load side fluid flow. Also, the unit might be overcharged with refrigerant, in which case you should reclaim refrigerant, evacuate, and recharge to the factory-recommended level. Check the high-pressure switch for defects or improper calibration. Furthermore, if your unit uses a UMC and a 40°F freeze sensor, this sensor being in series with the HP switch can register as a high-pressure fault.
General| Model | Greensource TW122 |
|---|---|
| Category | Heat Pump |
| Heating Capacity | 12.2 kW |
| Energy Efficiency Class (Heating) | A++ |
| Sound Power Level (Outdoor Unit) | 62 dB(A) |
| Refrigerant | R410A |
| Operating Temperature Range (Heating) | -20°C to +35°C |
| Operating Temperature Range (Cooling) | +10°C to +46°C |
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