Bosch H01 (5311)

Critical

Compress — Hot gas temperature too high (TR6 > 110–120 °C).

Bosch H01 (5311): Hot gas temperature too high (TR6 > 110–120 °C). This fault typically halts operation and needs immediate attention.

Possible causes

Superheat too high / EEV not regulating.
Low charge due to leak.

Check steps

Check TR5/JR0, compare with manometer.
Check for leak, refill refrigerant.

Affected parts

Heißgasfühler TR6
EEV
Kältemittel

Safety note

Refrigerant & hot surfaces – technician only.

Source: Bosch resmi servis kılavuzu — Alarm List 8754, code 5311, Display Code H01, Customer: "Alarm Z1 Hot gas temperature too high" — alarm triggers per warning 5310, which fires when "discharge temperature sensor TR6 exceeds 110-120°C for 60 s." Matches app's TR6 > 110-120°C description almost verbatim.

Reviewed by Anıl Güzeldemir — in the refrigeration machine room since 2006, developer of Enthalio.

Look up in Enthalio →

Related fault codes

No EMS BUS communication / internal connectionA11 Booster heater limiter (STB) or pressure switcA01 (5246) Z1 phase monitor tripped: one or more supply-vA01 (5273) High pressure guard MR1 tripped.H01 (5508) Compressor control failure – not running / locA01 (5350) No communication via EMS BUS.A11 (1010)