IVT Heat Pump Service & Repair
IVT Greenline heat pumps (now Bosch Worcester heat pumps) are an extremely common heat pump across Ireland. The IVT comes in 2 models, Greenline HT Plus C with the cylinder built into it, and the Greenline HT Plus E with the cylinder sperate. These heat pumps come in 6kw, 7kw, 9kw and 11kw for the single phase models.
A very reliable heat pump with a very good level of control functions, which inclue use of night rate for both heating and hot water. Common alarms on these heat pump include:
Motor cut-out compressor (MB1)
Motor cut-out HTF (MB2)
Compressor temperature (T6 GT6)
Low pressure switch (LP)
High pressure switch (HP)
Electric cassette (EK)
High Heat transfer fluid delta (GT8/GT9)Other issues that can occur with this range of heat pumps is the 3 port diverting valve can pass from the hot water tank to the heating system which can cause over heating and very high bills.