FieldBench
Bosch codes

Bosch

E7

Protect

Discharge sensor seating

T5 not tracking (T5 < T3 − 5°F in cool, or similar band in heat, for 10 min) — plug not on the discharge or a real high-discharge event.

Walk E7 in Diagnose

Sign in for the next measurement

First check

1 Which sensor is this code?

On Bosch BOVA 2.0 E7 is a specific thermistor — indoor return/pipe, outdoor coil, discharge, or ambient. Unplug that sensor and ohm it vs the OEM temperature/resistance chart. T5 fully on the discharge tube. 5K sensor.

Expect: Ohms move with temperature. Not open, not shorted.

The rest of the walkthrough is Diagnose.

On the plates

  • T5 fully on the discharge tube. 5K sensor.
  • If T5 is seated and hot, that is charge / restriction / P4 territory — do not just reseat forever.

Plates that use E7

Same number, other makers

E7 on Bosch is not the same code on these plates.