Jandy Pool Heater FAULT-PUMP Error Code

Updated 2026-08-29 · review status: manual-verified Last verified: 2026-08-29

Quick answer

Pump Off Status Status message indicating the filter pump is currently OFF when heater is in Maintain Temp mode. Normal status — not an error. Pump is off while heater is programmed in Maintain Temp mode. No service required. This is normal operation. The heater will fire when the pump turns on and water temperature drops below set point.

Severity: high · DIY difficulty: intermediate

Safety

TBD - must be written per-code before publish

What FAULT-PUMP means

Pump Off Status Status message indicating the filter pump is currently OFF when heater is in Maintain Temp mode. Normal status — not an error. Pump is off while heater is programmed in Maintain Temp mode. No service required. This is normal operation. The heater will fire when the pump turns on and water temperature drops below set point.

Code meaning varies by series

  • JXi 200/260/400 & LXi 250/400: FAULT-PUMP: status message (not an error) indicating the filter pump is OFF while the heater system is programmed in Maintain Temp mode.

Causes, ranked

  1. 1. Status message indicating the filter pump is currently turned OFF when the heater system programmed in Maintain Temp mode. occasional pro-only

    Check:

    Fix:

Parts & supplies for Jandy Pool Heater: filters, control boards, sensors, and common replacement parts.

HVACDirect →  ·  Amazon →

Commonly searched as: "jandy fault-pump" · "jandy error code fault-pump" · "jandy air conditioner fault-pump"

Sources

  • PoolDial error-code reference (manual-backed) — verified 2026-08-29
  • Jandy JXi Gas-Fired Pool and Spa Heater Installation & Operation Manual (Section 10.2 Service Diagnostic Messages, 10.3 Ignition Control LED Service Codes) — verified 2026-08-29
  • PoolDial Jandy JXi troubleshooting guide (fault-code table) — verified 2026-08-29