Full system inspection. 2022 Waterfurnace 7 series 4 ton equipment is not heating the house Initial walkthrough discovered a intellizone2 3 zone system controlling the 7 series equipment. Six dampers divided between basement zone 3 set at 45%, second floor zone 2 also 45%, first floor zone 1 set to 70%, 2 each zone All set to "comfort mode" with "normal" staging Heating run test discovered several critical issues affecting the operation. -Post winter season should be the highest pressures of the ground loop between 50 and 75 PSI however the horizontal two pump system is barely reading the minimum functioning pressure of 15 PSI -The ground loop inbound water temperature thermistor has randomly fluctuating temperatures between 45 and 21° f. After inspection of the thermistor at the ground loop water line the thermistor failed completely. -suction line thermistor is malfunctioning by reading 10 to 15° higher than the actual temperature. 96psi suction is reading 45°f but should be 31 or