Autoterm Pu-28 Touch Screen Air Heater Control Panel User Manual

PU-28 Touch Screen Air Heater Control Panel
User Manual

Introduction

This Operating Manual contains general information for the user on safe maintenance and operation of the product.
In case of any problems, we strongly recommend that you contact authorised service centres, the addresses and phone numbers of which you can obtain from the seller or on the www.au-toterm.com website.
Before operating the product, read this operating manual and the heater operating manual.

Warranty and liability

The manufacturer will not be liable for defects and dam- age caused by failure to follow the heater installation and maintenance instructions.

• The control panel can only be used to control liquid heaters Flow 5, Flow 6, Flow 10, Flow 14 and air heaters Air 2D, Air 4D, Air 9D.
• Do not connect and disconnect the control panel connector while the liquid/air heater is operating.
• After the product is switched off, it should not be switched on again for at least 5–10 seconds.
• For safe product operation, after two unsuccessful attempts to start the product in a row, contact the service department for troubleshooting information.

The warranty operating period and the conditions of warranty service are specified in the warranty certificate.

Safety

DO NOT switch on and operate the liquid/air heater in locations where combustible vapours or gases or large amounts of dust can form and accumulate (for example, fuelling stations or petroleum, fuel, coal, timber, or grain storage facilities). Explosion hazard.
Do not switch on and operate the product in enclosed or non-ventilated premises (sheds, garages, etc.). Hazard of poisoning and asphyxiation by exhaust gases.
Do not switch on and operate the product if combustible materials or fluids are present in the exhaust gas. Fire hazard.
Do not use a faulty product. Injury hazard due to the use of faulty device.

Control panel PU-28

The control panel interface depends on the product it is connected to.

The control panel is designed for:

• manual start and shut-off of the product;
• manual start and shut-off of the pre-heater pump (for liquid heaters Flow 5, Flow 6, Flow 10, Flow 14);
• manual start and shut-off of ventilation (for air heaters Air 2D, Air 4D, Air 9D);
• fluid temperature display (for liquid heaters);
• power supply voltage display;
• current time and operating time display;
• setting of the liquid temperature heating limit/set-point (for the heater);
• activation of the product start-up timer;
• economy mode activation (for liquid heaters Flow 10, Flow 14);
• display of the software version of the control panel and heater;
• auxiliary heater operation mode selection (for liquid heaters);
• display of malfunction code in case of product malfunctions.

When power is supplied to the control panel, the time must be set
The front panel of the control panel has a capacitive touch screen that can be physically pressed (with a small amount of force). There is a button underneath the capacitive touch screen.
The touch screen responds to touch. The start-up/shut-down command is executed by physically touching the screen only if it has not been triggered by the capacitive touch screen.

Control panel operation

Once connected to the product, the control panel retrieves the op- erating settings from the product. It is necessary to verify whether the actual settings correspond to the desired settings.

1. Main screen
   The main screen (Fig. 1) shows the current time in the lower left corner and the current heating medium/air temperature in the centre. A short tap in the bottom right corner switches between heating medium temperature, air temperature, and power supply voltage.
   A long tap opens a graph showing changes in the temperature of the heating medium, air temperature, and power supply voltage over the last 7 days. To start the product (Fig. 2), tap the centre of the screen or press mechanically.Fig. 1. The main screen of a liquid heater and an air heater After the product has been started up, the countdown of the oper- ation time in minutes (Fig. 2) will begin at the bottom left of the screen. Switching between operation time and current time is done by short tapping on the operating time.
   Set the temperature limit/set-point by moving the slider along the circumference of the temperature scale, or by tapping the ‘+’ and ‘-’ next to the current fluid temperature display (Fig. 3). During adjustment, the set-point value is also displayed in the centre of the screen.To shut the product down (Fig. 4), tap the centre of the screen or press mechanically. After the shut-down, the control panel switches to the main screen (Fig.1). When the control panel remains idle, it switches to standby mode to reduce the power consumption (Fig. 5).
   The heater must not be disconnected from the power supply before the end of the purge cycle
2. Operational features
   A long tap (2 seconds) on the centre of the screen when a Flow 5, Flow 6, or Flow 10 heater is switched off will force the pump to start (without heating the coolant). For an air heater, a long tap triggers ventilation mode (without heating).
   During Flow 10 and Flow 14 heater operation, a long tap switches the operating mode to economy mode.
   During continuous operation at low setting, all products automatically restart every 3 hours.
3. Timers
   Tap to set up the timer. The control panel allows to program up to three start-up timers. switches between timers; Timer on – timer activation;Do not reset timers – the timer will not switch off after triggering.
   The time is set by tapping the ‘+’ and ‘-’. exits the timer settings.
4. Control panel screen settings
   Tap on the main screen (Fig. 1) to access the settings. Navigate between the menu pages by tap- ping .
   Control panel screen settings (Fig. 7). The brightness can be adjusted using the Brightness slider.Sleep mode when running – turn the screen off while the product is in operation. To return from sleep mode, press or tap the screen. The time after which the remote control enters sleep mode can be adjusted from 30 sec, to 5 min. Show clock – display the current time and day of the week while the control panel is in sleep mode (only when the product is running).
5. Liquid heater settings
   In auxiliary heater mode, the heater is operated in conjunction with the vehicle engine.
   Pre-heater mode is intended for preheating the vehicle’s engine and/or passenger cabin. The heater can be pre-started using a timer or manually.
   Heater operating mode settings (for Flow 5, Flow 6, Flow 10) (Fig. 8):
   Auxiliary heater manual mode – manual auxiliary heater mode (not available on some software versions). If the heater is switched off, it will not start automatically after the engine is started.Auxiliary heater auto mode – automatic auxiliary heater mode. If the heater is switched off, it will start automatically after the engine is started. When the engine is stopped, the heater will switch off automatically. If the heater is switched on, it will automatically switch to the auxiliary heater mode when the engine is started.
   Engine temperature – auxiliary heater temperature setting. The required temperature can be set between +75…+95 °C. The default setting is +85 °C.
   Preheater temperature – the fluid temperature at which the heater enters standby mode (heater operation stops, pump operation continues). When the fluid temperature drops to the specified value, the heater exits the standby mode (heater operation is resumed). The default value for the standby temperature is +88 °C. The standby temperature can be set between +20…+95 °C.
   Pump operating mode settings (for Flow 5, Flow 6, Flow 10) (Fig. 9):
   Pump in standby mode – setting of pump operation in standby mode. In auxiliary heater mode, after the heater goes into standby mode, the heater stops running and the pump continues to run.
   Pump on with engine – setting of starting the pump when the engine is started. The pump supplied with the heater can be used for additional circulation of the working liquid while the vehicle’s engine is running. The pump starts automatically when the engine is started and switches off when the engine is stopped.
   Turn on auxiliary blower – switch on the passenger cabin heater.
   Auxiliary blower temp. – switch-on temperature setting for the passenger cabin heater. The required switch-on temperature can be set between +30… +60 °С. The default value for the relay switch-on temperature is +40° C. Operation time settings (Fig. 10).
   Hours – number of hours;
   Minutes – number of minutes;
   Unlimited – no time limit.In the system settings (Fig. 11), you can switch between the units of temperature measurement: Celsius °C or Fahrenheit °F; select the 12-hour time format.
   External operating – control of the heater(Flow 5, Flow 6, Flow 10 only) using an external control channel (provided the heater is connected to the control channel). For the Flow 14 heater, this setting is not displayed and is enabled by default.
   Thermostat mode – the mode for maintaining room temperature. The temperature is maintained by a built-in sensor in the control panel.
   Work Time – the operating time of the heater ranging from 1 to 24 hours.
   Unlimited – no time limit.
   Hysteresis – difference between the set-point temperature and the air temperature from the built-in sensor in the control panel (-3 to -10). Standby mode will be activated at 1 °C above the set temperature ‘Set point’. Standby mode will be deactivated at 3 °C below the set temperature ‘Set point’.
   Preheater temperature – set-point for the heating medium temperature (60 to 95 °C).
   System information window (Fig. 13) shows the software version of the control panel and the control unit of the product. It also displays the total number of hours the product has worked. The language selection menu looks as shown in Fig. 14.
6. Air heater settings
   Air heater operating mode set– tings (Fig. 15):
   Panel sensor – the set-point temperature of the temperature sensor located in the control panel is used for operation.
   External sensor – the set-point temperature of an external temperature sensor is used for operation.Power – the power set-point is used for operation Operation time settings (Fig. 16).
   Days – number of days;
   Hours – number of hours;
   Minutes – number of minutes;
   Unlimited – no time limit.

   In the system menu (Fig. 17), you can switch between the units of temperature measurement: Celsius °C or Fahrenheit °F; select the 12-hour time format.Ventilation on Standby – when the heater switches to standby mode, the blower will continue to run in ventilation mode. System information window (Fig. 18) shows the software version of the control panel and the control unit of the product. It also displays the total number of hours the product has worked.

7. Date and time settings
   To set the current time and day of the week, long tap on the current time in the corner of the screen. The time is set by tapping the “+” and “-”. At the bottom of the screen, you will find the Clock correction setting. Under the influence of low temperatures, the accuracy of the clock may vary. If necessary, the correction value is set between -720 and +720 sec. per day. The default correction time is . Tap to exit.

8. Malfunctions
   Malfunctions that occur during heater operation are coded and au- tomatically displayed on the control panel display (Fig. 23). To reset a malfunction, tap the centre of the screen. Heater malfunction codes are given in Table 1.

ATTENTION
Maintenance and repair should only be performed by trained, qualified personnel!

Malfunction codes

For the interpretation of the malfunction codes for the Flow 5, Flow 6, Flow 10 liquid heaters, see Table 1.
Table 1

• * ATTENTION! If error #13 is repeated three times in a row during heater start-up, the heater will be locked out. This lockout is intended to prevent excess fuel from entering the combustion chamber. In the event of lockout, code 37 will be displayed on the control panel.
  The malfunction codes for AIR air heaters are shown in Table 2.
  Table 2

* Attention! If the ‘Overheat’ error is repeated three times in a row during heater start-up or operation, the heater will be locked out. The lockout occurs upon  overheating, irrespective of which sensors have registered an error. In the event of lockout, code 33 is displayed on the control panel. Contact the service centre to unlock the heater

For the interpretation of the malfunction codes for the Flow 14 pre-heater, see Table 3.
Table 3

References

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