Fault Codes / Bitzer

23 codes

ECOLINE

• 3411 — Discharge Pressure High
• 3502 — Oil Pressure Low
• 4201 — Motor Phase Loss
• 4202 — Motor Phase Sequence Fault
• 7401 — Sensor Fault: Suction Pressure Sensor
• 7402 — Sensor Fault: Discharge Pressure Sensor
• 7404 — Sensor: Suction Pressure Signal High
• 7405 — Sensor: Discharge Pressure Signal Low
• 7406 — Sensor: Discharge Pressure Signal High

ECOLINE / Frequenzumrichterbetrieb

• 4220 — Motor Frequency Low (VFD operation)
• 4221 — Motor Frequency High (VFD operation)

ECOLINE / IQ Module

• 3400 — Suction pressure low
• 3431 — High pressure switch tripped
• 3500 — Oil level low
• 4301 — Motor temperature high
• 4302 — PTC motor winding sensor fault / sensor cold.
• 4321 — High pressure switch tripped.
• 4322 — Low pressure switch tripped.
• 4405 — Discharge gas temperature too high (HGT > limit).
• 4501 — Compressor rotation direction wrong (phase sequence).
• 4601 — Communication error module ↔ master (Modbus).
• 7308 — Discharge temperature sensor fault

SE-i1

• 2 Flashes — Discharge gas temperature too high (>140°C).