Installation: Dimplex PLXE Panel Heater PLX050E Instruction Manual

Overview

The PLXE Panel Heater PLX050E is a compact, wall-mounted electric convector heater designed for controlled heating in domestic rooms and suitable light-commercial spaces. Its 500 W output, programmable timer, electronic thermostat, and slim steel casing make it well suited to bedrooms, offices, hallways, and other areas that need predictable background or scheduled heat.

The heater uses natural convection: air enters through the lower inlet, passes over the finned heating element, and leaves through the upper grille. Digital controls provide timer schedules, temperature adjustment, temporary boost heating, frost protection, and energy-conscious operating modes.

Specifications

• Model: PLX050E
• Nominal and maximum heat output: 0.50 kW
• Minimum heat output: Not applicable
• Dimensions: 450 mm wide, 430 mm high, and 108 mm deep
• Installation: Wall mounting with the supplied H-frame bracket
• Electrical supply: 230–240 V, 50 Hz, single-phase, Class I with earth connection
• Supply cable: 1.3 m, three-core cable for fixed fused-spur installation
• Ingress protection: IP24 splash protection
• Thermostat accuracy: Approximately ±0.2°C
• Temperature range: 7°C to 30°C
• Backup battery: Replaceable 3 V CR2032 coin cell, with a typical life exceeding five years
• Heating element: Compact, finned, mineral-filled sheathed element
• Finish: Traffic White, RAL 9016, with epoxy-polyester powder-coated steel casing
• Approvals: CE, UKCA, and BEAB
• Country of manufacture: United Kingdom

Detailed Description

The PLX050E has a forward-facing louvered grille and a control interface positioned at the upper right when the heater is installed correctly. The casing is made from powder-coated steel, while the internal mineral-filled element is designed for compact convection heating.

The control panel contains a graphical display with RGB backlighting and six capacitive touch controls. These are the Menu, Back, Up, Down, Enter, and Advance buttons. Audio feedback can be enabled or disabled in the settings.

The electronic thermostat monitors room temperature and regulates the heater against the selected target. The display shows the active mode, target temperature, and heating status when a timer profile is operating. The display may go to sleep after a period without button activity, but the heater continues operating according to its selected settings.

Built-in thermal protection includes an automatic-reset thermal cut-out and overheat detection. The heater also supports Bluetooth software updates and optional wireless connectivity hardware for compatible remote-control systems.

Safety

• Read and retain the installation and operating instructions before using the heater.
• Use the supplied wall bracket and install the appliance in the correct upright orientation, with the controller at the upper right.
• Installation and fixed electrical connections must be completed by a competent electrician in accordance with applicable wiring regulations.
• The heater must be earthed and connected through a suitable double-pole isolating switch with at least 3 mm contact separation.
• Do not use the heater outdoors, in the immediate surroundings of a bath, shower, or swimming pool, or if it has been dropped or visibly damaged.
• In a room containing a bath or shower, position the appliance so that a person using the bath or shower cannot touch its switches or controls.
• Never cover the heater or obstruct the upper heat outlet and lower air inlet. Clothing, curtains, furniture, and other materials can cause overheating or fire.
• Keep curtains, textiles, and other flammable materials at least 1 metre from the air outlet.
• Do not place the heater immediately below a fixed socket outlet or connection box.
• Do not use the heater in a small room occupied by someone who cannot leave independently unless continuous supervision is provided.
• Keep children under three away unless continuously supervised. Children aged three to under eight may only switch the appliance on or off when it is correctly installed and they are supervised or instructed.
• Children must not plug in, adjust, clean, or maintain the heater. Older children and people with reduced abilities may use it only with suitable supervision and safety instruction.
• Some surfaces become hot during operation. Take additional care around children and vulnerable people.
• Automatic timers and remote controls require extra care because a covered or displaced heater can create a fire risk.
• A damaged supply cable must be replaced only by the manufacturer, an approved service agent, or a similarly qualified person.
• Repairs and servicing must be performed by an approved or suitably qualified technician using approved replacement parts.
• Smoking, candles, and oil burners can create soot deposits above and beside the heater. This discoloration is caused by airborne particles and is not necessarily a heater fault.

Setup and Installation

Before installation

Confirm that the electrical supply matches the rating on the heater. Select a solid wall capable of supporting the appliance and observe the clearance dimensions shown in the installation documentation. The heater must remain upright and must not be installed horizontally or in an inverted position.

Leave at least 150 mm clearance where specified around the heater and maintain a minimum 300 mm clearance from a shelf or obstruction above the appliance. Keep the front clear so air can circulate freely.

Wall mounting

1. Press the spring latch on each side of the rear bracket and remove the supplied wall bracket from the heater.
2. Position the bracket against the wall and secure it through all four fixing holes using fixings suitable for the wall construction.
3. Hook the lower slots on the back of the heater over the hooks on the bracket.
4. Press the upper part of the heater toward the wall until the retaining clips engage.
5. Check that the heater is secure, correctly oriented, and unobstructed before connecting the electrical supply.
6. Remove the protective film from the user interface.

The product is heavy enough that installation should be carried out carefully, with assistance where necessary. Fixed-wiring work must be completed by a qualified electrician.

First power-on

When the PLX050E is powered for the first time, the setup wizard guides you through the time, date, daylight-saving setting, and button-sound preference. After setup, the home screen opens with the Out All Day timer mode active.

A slight odour may occur during the first heating period as new materials warm for the first time. This is normal; ventilate the room until the smell clears.

Operation

Basic controls

• Menu: Opens Boost, Mode, and Settings.
• Back: Returns to the previous screen or exits selected functions.
• Up and Down: Navigate menus and adjust the target temperature.
• Enter: Opens a submenu or confirms a selection.
• Advance: Temporarily changes the current timer period when a timer mode is active.

The adjustable target temperature ranges from 7°C to 30°C. A setting of approximately 21°C is commonly comfortable, although the most suitable temperature depends on the room and occupants.

Timer modes

Timer operation divides each day into up to four heating periods, with an individual target temperature for each period. The available timer profiles are:

• User Timer: Four programmable heating periods for each day of the week.
• Home All Day: A longer daytime heating period, with additional periods available for editing.
• Out All Day: Shorter scheduled periods intended for homes that are unoccupied during much of the day.
• Away: A temporary minimum-temperature schedule that ends automatically at the selected return time or date.

For the User Timer, Home All Day, and Out All Day profiles, choose Select to activate a schedule, Modify to change times and temperatures, or Preview to view the current configuration. A timer must be selected after modification before it will control the heater.

Timer periods can be copied between days. Hold the Advance button for two seconds to copy a selected period or a complete day, then use the selection controls and hold Enter for two seconds to paste it.

Continuous heat modes

• Manual: Maintains a continuous target temperature. The default setting is 21°C and can be adjusted within the available range.
• Eco: Provides continuous heating at a lower default target of 19°C. The user-adjustable range is 8°C to 18°C.
• Frost Protect: Maintains a 7°C frost-protection target and cannot be user-adjusted.

Advance function

Advance temporarily switches a timer period. When the heater is off during a timer schedule, pressing Advance starts heating until the next scheduled end time. When the heater is on, pressing Advance ends the current heating period until the next scheduled start time. Press Advance again to cancel the temporary change and return to the programmed schedule.

Boost mode

Boost provides temporary higher-temperature heating from any timer or continuous mode. Select Boost from the main menu, then set the target temperature and duration. Available duration steps are 30 minutes, 1 hour, 2 hours, 3 hours, and 4 hours, subject to the configured maximum.

When the countdown reaches zero, the heater automatically returns to the mode that was active before Boost. Press Back to end Boost early.

Away mode

Away mode temporarily overrides the current schedule while maintaining a selected minimum temperature. Its default target is 7°C, and the target can be changed when the mode is activated.

Set a return date, a number of hours, or both. The selected date is treated as the return date, so the mode ends at 23:59 on the preceding day. A Back-button action ends the countdown early and restores the previously active mode.

Adaptive start and open-window detection

Adaptive Start learns how quickly the room heats and begins warming before a scheduled period so that the target temperature is reached at the programmed start time. If several heaters operate in the same room, enable Adaptive Start on all of them for more consistent timing. Preheating calculations are limited to two hours.

Open Window Detection can switch the heater to Heating Off when it senses a rapid temperature drop. Drafty rooms, poor insulation, or an undersized heater can trigger this feature unnecessarily, in which case it can be disabled in the settings.

Setback

Setback applies only to timer operation. When enabled, it maintains a selected background temperature during scheduled Heating Off periods instead of allowing the room to cool fully. The Setback temperature can be set between 7°C and 18°C.

Child Lock and Heater Lock

Child Lock prevents changes without using a PIN. Press and hold Back and Enter together for three seconds to toggle it. The heater continues operating with its existing mode and temperature.

Heater Lock uses a four-digit PIN and can secure the operating mode and settings. Before activating it, the user can decide whether Advance and Boost remain available and whether Boost temperature and duration may be changed while the controls are locked.

Settings and advanced controls

The Settings menu includes Heater Lock, Boost options, Setback, date and time, sound, and communications settings. Temperature units can be changed between Celsius and Fahrenheit.

Advanced settings are accessed by holding Advance and Menu for five seconds. These include a thermostat room-temperature offset of up to ±0.2°C and Factory Reset. Because advanced changes can substantially affect operation, they should normally be handled by trained personnel.

Cleaning and Maintenance

Cleaning the casing

1. Isolate the heater from the electrical supply.
2. Allow the appliance to cool completely.
3. Wipe the exterior with a soft, dry cloth.

Do not use abrasive powders, harsh cleaners, or furniture polish because these products can damage the painted finish. Keep the air inlet and outlet free from dust, lint, and obstructions.

To move the heater forward for cleaning or redecoration, press the release latch on both wall-bracket clips and hinge the appliance forward carefully. Isolate the supply before doing this.

Replacing the backup battery

1. Disconnect the heater from the electrical supply.
2. Release the heater from the wall bracket using the side clips and locate the battery module.
3. Slide the catch and pull the module from the control assembly.
4. Remove the old CR2032 coin cell and fit the replacement with the positive side facing upward.
5. Slide the module back into position and confirm that its retaining clip engages.

Dispose of the used battery through an appropriate battery-recycling or waste-disposal service.

Wireless module installation

If compatible wireless control hardware is being installed, isolate the heater first, release it from the bracket, remove the battery module, and replace the tray with the radio-frequency module. After restoring power, enable the relevant communications option in the Settings menu.

Troubleshooting

• The heater does not appear to heat: Check that the target temperature is higher than the current room temperature, the selected mode is active, and the display is not showing an intentional Heating Off state.
• The timer is not operating as expected: Confirm that the intended profile has been selected after editing. Check the time, date, daylight-saving setting, and individual heating periods.
• Heating starts earlier than scheduled: Adaptive Start may be enabled. Disable it if preheating is not required.
• Heating stops after a sudden temperature drop: Open Window Detection may have activated. Check for open windows or drafts, then disable the feature if it is responding unnecessarily.
• The display is blank: The display may be asleep while the heater remains active. Press a control button to wake it.
• The heater makes a clicking or creaking sound: Expansion and contraction of the heating element can produce noise as it warms and cools. Hard floors and lightly furnished rooms can make this more noticeable.
• A new-heater smell is present: Ventilate the room during the first heating period. The odour should reduce after a short time.
• The heater becomes too hot or airflow is restricted: Switch it off, allow it to cool, and remove any covering, clothing, furniture, or other obstruction from the inlet and outlet.
• Error code 20: Component thermistor hardware fault.
• Error codes 30, 32, 33, or 34: Component overheat condition.
• Error code 40: Internal serial communications error.
• Error code 41: Heating element fault.
• Error code 50: Open-window condition detected.
• Error code 52: Heat output disabled.
• Error code 53: Time data has been lost.
• Error code 54: Occupancy sensor not detected.
• Error code 55: Unknown fault.
• Error code 60: Wireless communications module fault.
• Error code 61: Hub connection fault.

Persistent fault codes, visible damage, overheating, or a damaged cable require the heater to be isolated and inspected by an approved or suitably qualified service professional.

Warranty

The PLX050E includes a two-year parts-and-labour guarantee covering repair or replacement of faulty goods, or a partial refund where repair or replacement is unavailable. The guarantee does not reduce statutory consumer rights. Terms and conditions apply.

Pros & Cons

Pros

• Compact 500 W output for smaller rooms and background heating.
• Accurate electronic thermostat with a broad 7°C to 30°C target range.
• Seven-day programming with four possible heating periods per day.
• Useful Boost, Advance, Away, Eco, Setback, and frost-protection modes.
• IP24 splash protection and built-in overheat safety systems.
• Child Lock and PIN-based Heater Lock help prevent unwanted changes.
• Replaceable clock-backup battery and optional wireless-control capability.

Cons

• Fixed electrical installation requires a competent electrician.
• Wall mounting is required, so the heater is not intended for free-standing use.
• Airflow must remain unobstructed to avoid overheating.
• Advanced settings can cause unintended operation if changed incorrectly.
• Wireless remote control requires additional compatible hardware.