What does alarm AL1 mean on a Dixell XR60 controller?

AL1 on the Dixell XR60 indicates a minimum temperature alarm — the measured temperature has fallen below the programmed minimum alarm threshold (parameter AL). Check if a defrost cycle is stuck, verify the temperature probe is working correctly, and review the AL parameter setting to ensure it is appropriate for the application.

How do I configure defrost on a Dixell XR series controller?

Access Dixell XR defrost settings by pressing UP+DOWN for 5 seconds to enter programming mode. Key defrost parameters: dFt (defrost type: 0=electric, 1=hot gas), dtE (defrost end temperature, typically 8-12°C), MdF (maximum defrost time in minutes), and id (defrost interval in hours). Exit programming mode by pressing UP+DOWN again.

How do I read the Dixell XR sensor fault code?

A Dixell controller displaying 'Er1' or 'E1' indicates a fault with probe 1 (usually the main temperature probe). 'Er2' or 'E2' is probe 2 (defrost termination probe). Check probe wiring connections and measure probe resistance — NTC probes should read approximately 10kΩ at 25°C. Probes shorted to ground read near zero; open probes read OL.

What is the factory default password for Dixell controllers?

The factory default password for Dixell controllers is typically '22' or '0000' depending on the model series. For XR series, the installler password is '22'; for XW series, the first level password is '0000'. If the password has been changed, perform a factory reset by powering off the controller and holding SET while powering on (model dependent — check the specific controller manual).

How do I set the high temperature alarm on a Dixell controller?

On Dixell XR controllers, the high temperature alarm is set via parameter 'AH' (alarm high). Set AH to the desired temperature differential above the setpoint, or as an absolute temperature value depending on the programming mode (relative vs absolute). Ensure the alarm delay parameter 'Ad' is set to prevent false alarms during door openings.

What is the difference between an Er1 / Er2 probe code and a P1 / P2 / P3 probe code on Dixell controllers?

Older Dixell standalone controllers (pre-Copeland-rebrand XR60CX, XR40CX firmware revisions before 2014) display 'Er1' or 'Er2' for probe 1 and probe 2 NTC failures — open-circuit, short-circuit, or out-of-range. Newer Dixell firmware and the post-rebrand XR70CX / XR30CX generations migrated to the 'P1' / 'P2' / 'P3' label scheme to align with the broader Pb1 / Pb2 / Pb3 channel naming used across the XC and iChill product lines. The diagnostic procedure is identical: ohm the probe with power off (NTC 103AT-2 reads ~10 kΩ at 25 °C, ~32 kΩ at 0 °C, ~3.6 kΩ at 50 °C), check terminal connections at the controller, and verify the probe-type parameter (Hy0 / P0 on legacy XR firmware, AP1 / AP2 / AP3 on newer revisions) matches the physical probe shipped with the unit.

How do I troubleshoot a Dixell controller stuck in defrost (dEF)?

'dEF' on the Dixell display means a defrost cycle is currently active and is normal during the programmed defrost window. The cycle should terminate when the defrost probe (Pb2) reads the dtE end-temperature setpoint or when the maximum defrost time MdF expires — whichever comes first. If 'dEF' persists past MdF: (1) ohm Pb2 — a shorted Pb2 reads cold permanently and prevents temperature-terminated end of defrost; (2) verify dtE is set sensibly (typically +8 °C to +12 °C for electric defrost, +5 °C to +8 °C for hot-gas); (3) check MdF is realistic for the evaporator size (typically 20–45 min); (4) confirm the defrost heater contactor is actually energising on the relay output; (5) check the dripping time tdF parameter is not stuck. Force-end the active cycle by pressing the defrost button (snowflake icon) for 3 s on most XR controllers.

What does EA, CA, or AH mean on a Dixell XR controller?

EA (external alarm) on the Dixell XR series is generated when the digital input configured as i1F = EAL closes — typically wired to a remote panel safety, a refrigerated-display general-alarm aggregation, or a phase-loss / motor-overload contact. CA (compressor / door alarm) covers two cases depending on i1F: door-switch input held active beyond the OAd door-open delay (regulation switches off until the door closes), or compressor-protection input. AH is the high-temperature alarm referenced to probe Pb1 — trips when the cabinet rises above the AH threshold for longer than the Ad alarm delay; it auto-resets when temperature returns within the AFH alarm differential. EA and CA also auto-reset when the digital input opens. If EA latches permanently with no field condition, check parameter i1P (input polarity — normally-open vs. normally-closed) matches the physical contact wiring.

How do I enter Pr2 service-level programming on a Dixell XR controller?

On the Dixell XR40CX / XR60CX / XR70CX standalone retail controllers, user-level parameters live in Pr1 and the full service-level parameters (probe allocation, alarm thresholds, defrost configuration, regulation algorithm) live in Pr2. Press and hold SET + DOWN simultaneously for about 7 seconds; the display shows 'Pr2' and prompts for a password — the factory default is 321 on most XR firmware, 22 on legacy XR60 revisions. Use UP / DOWN to scroll, SET to enter and modify a value, then SET again to save. Exit by pressing SET + UP for several seconds, or wait for the auto-exit time-out (typically 60 s). XW controllers use FNC + DOWN for the equivalent access. Always document parameter changes on the commissioning sheet — Dixell controllers do not store an audit log of who changed what.

Where can I find Dixell standalone XR / XW manuals and code-erreur Dixell references?

Dixell standalone controller manuals are now hosted on Copeland's webapps portal (webapps.copeland.com/Dixell/) following the 2024 Emerson → Copeland rebrand — even legacy XR60CX, XR40CX, and XW60K manuals redirect there. Manuals are organised by family: XR retail (XR70CX-GB.pdf, XR40CX-GB.pdf, XR30CX-GB.pdf), XW walk-in (XW60K-EN.pdf), XC compressor / rack (XC1008-1011-1015D-GB.pdf), XEV02 valve drivers, iChill chillers, iPro programmable, XWi serial. French-language 'code erreur Dixell' technicians can find translated alarm tables in the same portal under the language selector. The legacy emersonclimate.com URLs still redirect for now but should not be linked in new technician documentation. AskWhiz on WhatsApp returns the relevant Dixell manual passage and parameter values directly — no portal browsing required, useful when working in a cold-room with poor signal.

Quick Answer

Dixell standalone controllers (XR40CX, XR60CX, XR70CX, XR30CX, XW60K) report Er1 / Er2 / E1 / E2 for Pb1 / Pb2 NTC probe faults, AL1 / AL2 for minimum and maximum temperature alarms, AH for the high-temperature alarm, dEF for active or stuck defrost, and EA / CA for external safety and door inputs. Pr2 access uses SET + DOWN for 7 s, default password 22 or 321 depending on firmware.

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By Nichita Herput

Co-founder & CEO · Reviewed May 2026

What error codes does Dixell display?

Er1

Probe 1 (Pb1 cabinet) NTC fault — ohm probe (10 kΩ at 25 °C), check terminal wiring, replace if open / shorted

Er2

Probe 2 (Pb2 defrost) NTC fault — defrost terminates by MdF time-out only, replace probe to restore temperature-end defrost

Pb1 probe fault on newer XR firmware — same diagnostic as Er1, controller falls back to Ont / OFt duty-cycle

Pb2 probe fault on newer XR firmware — same diagnostic as Er2, defrost end disabled

AL1

Minimum temperature alarm — cabinet below AL threshold, check stuck defrost, probe placement, refrigerant overcharge

AL2

Maximum temperature alarm — cabinet above AH threshold, inspect condenser, door seal, refrigerant charge

High-temperature alarm referenced to Pb1 — set AH threshold, Ad delay, AFH differential, auto-resets when in-band

External alarm — digital input EAL closed, check field-wired safety device and i1P polarity parameter

Door / compressor digital-input alarm — door open beyond OAd delay or compressor protection input active

dEF

Defrost cycle active — normal during defrost window, force-end with snowflake button if stuck past MdF

Common questions about Dixell equipment

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