background image

17

INSTRUCTION MANUAL 

AIR HEATER TYPE DXA

9  Troubleshooting

If the air heater malfunctions, first check if the problem is 
caused by external circumstances (e.g. no supply power). 
If the problem is not caused by external circumstances, 
use the tables and instructions in this chapter to fix the air 
heater.

 NOTICE 

 Please remember the built in waiting times of 

the air heater; the signals of the LED’s and the code on the 
display. Do not react too soon.

9.1  Volatile lock outs

The table below describes the volatile lock outs that can 
occur. These can only be reset by hand.

Display

Error type

Description

Case #

L-0

Internal error

Internal error

13

L-1

Ignition error

Flame lasts only 5 seconds 
after ignition

1

No flame after ignition

2

L-2 and 3

Internal error

Internal error

13

L-4

E-error

E-error for more than 24 
hours

12

L-8 to 12

Internal error

Internal error

13

L-15

Overheating

Heat exchange sensor is 
overheated

3

L-17 to 19 Internal error

Internal error

13

L-20

Flame error

Flame detected after 
closing the gas valve

15

L-21

Flame error

Flame detected before 
closing the gas valve

16

L-22

Flame error

Flame failure during 
burning

5

L-25

Sensor error

Heat exchange sensor 
failure

4

L-27 to 31 Internal error

Internal error

13

L-32

Sensor error

Heat exchange sensor 
failure

4

L-33 to 38 Internal error

Internal error

13

L-39

Vane switch error

Vane switch is closed while 
fan isn't running

17

L-40 and 
41

Vane switch error

Vane switch does not close 
when the fan should run

18

L-43

Overheating

Heat exchange sensor is 
overheated too often

3

 

9.2  Temporary errors

The table below describes the temporary errors that can 
occur. These will disappear automatically after the cause 
has been resolved.

Display

Error type

Description

Case #

E-00 to 04

Internal error

Internal error

13

E-05

Overheating

Heat exchange sensor is 
overheated

3

E-06 to 13

Internal error

Internal error

Flame detected when there 
shouldn’t be one

13

E-14

Flame error

16

E-15 to 20

Internal error

Internal error

13

E-21 and 22

Heat exchanger 
sensor error

Heat exchanger sensor not 
detected

4

E-27 and 28

Heat exchanger 
sensor error

Heat exchanger sensor 
short-circuit

4

E-34

Reset button 
error

Too many reset actions in a 
short timespan

9

E-36

Overheating

Heat exchange sensor is 
overheated

3

E-38 and 39

Heat exchanger 
sensor error

Heat exchanger sensor not 
detected

4

E-47 and 48

Heat exchanger 
sensor error

Heat exchange sensor 
short-circuit

4

E-49 to 64

Internal error

Internal error

13

E-65

Voltage too low

Supply voltage is too low 
for over 1 minute

E-66

Voltage too high Supply voltage is too high 

for over 1 minute

E-67

Pressure switch 
error

Too many pressure switch 
errors

11

E-69

Configuration 
error

Heater configuration error 19

9.3  Warnings

The table below describes the temporary warnings that 
can occur. The heater may still be working, or stops until 
the cause has been resolved.

Display

Error type

Description

Case #

A-02

Configuration 
error

Heater configuration error

19

A-07

Overheating

Heat exchange sensor is 
almost overheated

3

A-09

Gas pressure

There is not enough gas 
pressure.

Summary of Contents for DXA100

Page 1: ...DXA en v2 0 12 2019 INSTALLATION MANUAL AIR HEATER TYPE DXA ...

Page 2: ...g time 12 6 3 Summer ventilation 12 6 4 Overheating protection 12 6 5 Air passage check 12 6 6 Gas supply pressure 12 7 Commissioning the air heater 13 7 1 Adjusting the settings 13 7 2 Commissioning the air heater 13 8 Combustion settings 15 8 1 Adjusting the burner settings 15 8 2 Converting to another gas type 16 9 Troubleshooting 17 9 1 Volatile lock outs 17 9 2 Temporary errors 17 9 3 Warning...

Page 3: ... chapter when installing using or performing maintenance on this air heater 2 1 Installation CAUTION This air heater must be installed and maintained by an authorized qualified and competent installer using calibrated equipment NOTICE This air heater must be installed and maintained in accordance with this manual national and local building regulations and local health and safety regulations 2 1 1...

Page 4: ...e warranty CAUTION Air heaters installed in a dusty and or wet environment must be maintained and cleaned more frequently CAUTION Air heaters installed in poultry sheds must be maintained and cleaned after every breeding cycle 2 3 1 Protection from water IP class WARNING Never use water when cleaning electrical parts This air heater is protected against splash water and has an IPX4B classification...

Page 5: ... 0 004 0 004 Electrical current max A 2 8 2 8 3 8 Protection class IPX4D Pressure switch point mbar 15 15 15 Sound level at 8 m dBA 79 79 81 Thermostat connection 2 wire low voltage communication bus or ON OFF Weight kg 40 40 45 3 2 Gas types 3 2 1 Natural gas G20 Specification Unit Natural gas G20 Nominal supply pressure mbar 20 Supply pressure min max mbar 17 25 Gas category II2 H3 B P DE II2 EL...

Page 6: ...m3 h 8 9 11 8 14 2 Burner injectors n x Ømm 1x 8 5 1x 10 5 1x 12 0 Burner pressure mbar 11 5 9 5 10 0 3 2 3 Butane LPG G30 Specification Unit Butane LPG G30 Nominal supply pressure mbar 30 50 Supply pressure min max mbar 20 50 Gas category II2 H3 P B P NL II2 EK3 B P DE II2 ELL3 B P BE I3 B P FR II2 Er3 B P PL II2 ELwLs3 B P Class A3 Specification Unit DXA75 DXA100 DXA120 Gas consumption kg h 6 0 ...

Page 7: ...H3 P B P NL II2 EK3 B P DE II2 ELL3 B P BE I3 B P FR II2 Er3 P PL II2 ELwLs3 B P Class A3 Specification Unit DXA75 DXA100 DXA120 Gas consumption kg h 5 9 7 9 9 5 Burner injectors n x Ømm 1x 5 85 1x 6 85 1x 7 8 Burner pressure mbar 13 0 13 0 12 0 3 3 Dimensions The dimensions of this air heater can be found in figure 1 410 220 655 540 910 910 1230 Figure 1 Dimensions of the DXA ...

Page 8: ... heater close to flammable materials Keep sufficient distance between the heater and any obstructions This is both for safety reasons and to allow access for service and maintenance figure 2 Make sure the air flow to and from the heater is free from obstacles at least 5 metres in front of the heater Also make sure the air intake is free from obstacles Make sure enough space remains to open the doo...

Page 9: ...e thermostat Do not place the thermostat on a cold wall Place the thermostat on an inner wall free from draught Never place the thermostat within the throw of the heater Never mount the thermostat near the aerials of internal communication networks These emit radiation that can disturb the thermostat Keep several meters distance In all cases the communication between the heater and the thermostat ...

Page 10: ... C L Neutal 4 5 L Neutal 4 5 L Neutal 4 5 1 2 3 4 5 6 7 8 ON 1 0 1 2 3 4 5 6 7 8 ON 1 0 S1 J14 1 2 3 4 5 6 7 8 ON 1 0 1 2 3 Figure 8 Connection of multiple air heaters to a modulating room thermostat Each air heater needs an unique number to be recognised by the room thermostat This number can be set with the J14 switch on the control unit of each air heater 1 Set the S1 and J14 switches on the co...

Page 11: ...s These terminals need a dry contact 5 Flue systems This air heater uses oxygen from the surrounding air for the combustion process CO2 is formed and emitted as a result Too much CO2 in the air may be harmful to people animals and crops DANGER Never allow the CO2 concentration to rise above the values shown in the table below Maximum CO2 concentration Poultry shed 0 3 3 000 ppm Greenhouse 1 0 10 0...

Page 12: ...and gives an error 6 3 Summer ventilation The fan can be set to run in the summer Follow the instructions in the user manual of the special Room thermostat 6 4 Overheating protection The air heater s heat exchanger and flue system are both protected from excessive temperatures 6 4 1 Heat exchanger An NTC sensor is located near or on the heat exchanger This sensor monitors the heat exchanger temper...

Page 13: ... the air heater Once the unit is installed according to this manual the unit can be commissioned To do so follow these instructions 1 Make sure the gas supply pipe is clean gas tight and free from air 2 Switch on the electric supply with the maintenance switch You are now able to observe the first start up and become familiar with the functioning of the heater NOTICE If the gas line is not purged ...

Page 14: ...s the button until 0 is displayed to exit the service The air heater will always cool down the heat exchanger for several minutes The test mode will automatically end after 10 minutes Figure 12 Using the display ...

Page 15: ...pressure for this air heater see 3 1 Technical specifications 5 Record the measured value as a reference for the next measurement 6 If the burner pressure does not correspond with the specified value turn the adjuster screw figure 13 3 to the specified value 8 1 1 Measuring the CO 2 values Figure 14 Measuring combustion values with a probe To measure the CO and CO2 values do the following 1 Switch...

Page 16: ... 6 Disassemble the burner unit a Remove the stabilizer figure 15 7 from the injector figure 15 6 b Remove the flange from the injector by un screwing the injector s nut 7 Install the new injector 8 Reassemble the burner unit 9 Select the correct injector diameter and burner pressure see 3 2 10 Change the labels on the air heater with ones that have the correct values for the new gas type 11 When t...

Page 17: ...tch does not close when the fan should run 18 L 43 Overheating Heat exchange sensor is overheated too often 3 9 2 Temporary errors The table below describes the temporary errors that can occur These will disappear automatically after the cause has been resolved Display Error type Description Case E 00 to 04 Internal error Internal error 13 E 05 Overheating Heat exchange sensor is overheated 3 E 06...

Page 18: ...esults in a drop in gas supply pressure while burning and causes the flame to extinguish Check the gas supply pressure while the heater is burning Recirculation of flue gas Due to a problem with the flue terminal the flue gas is sucked back into the air inlet This results into a lack of oxygen and causes the flame to stop Check the flue system and fresh air supply Only certified original parts sho...

Page 19: ...0 2 Basic maintenance To perform basic maintenance on the air heater do the following CAUTION When cleaning parts of the air heater use a dry cloth brush compressed air or a vacuum cleaner Never use a steel brush 1 Inspect the outside of the heat exchanger 2 Clean the fan guard on the outside of the heater Clean the fan blades if required 3 Open the access panel 4 Clean the inside of the air heate...

Page 20: ...ressed air or a soft brush to clean the remaining parts from the air heater Focus on the following parts a The inside and outside of the body b The fan blades and motor c The temperature sensor d The vane switch 2 Remove all dust from the motor Accumulated dust acts as insulation and can cause the motor to overheat 3 Use a brush to remove any baked on dust 4 Clean the burner unit see 10 5 Open the...

Page 21: ...3 4 3 1 2 J25 LED RESET 4 3 1 2 4 3 1 2 J17 N L 7 6 N L K2 11 12 dP 18 17 16 15 N L RT 4 3 1 2 J16 4 3 1 2 A 24V B GND 20 GND 21 0 10V C1 C2 C3 C5 D1 I2 K2 S3 S5 1 0 T1 V1 5 4 M5 I3 I4 K2 3 2 K6 K6 11 13 Modbus L N P1 9 A1 10 A2 A1 8 N K6 PE RT A1 A2 No Connection type A1 Alarm output 230 V V optional C1 Bus communication system C2 Modbus connection C3 0 10 V input optional C5 ON OFF thermostat D1...

Page 22: ... GD3400 GD3400 GD3400 4 Ionisation electrode GD3391 GD3393 GD3393 5a Gas injector set Natural gas GD3434 GD3436 GD3438 5b Gas injector set Propane gas GD3424 GD3426 GD3428 6 Gas valve GD200713 GD200713 GD200713 7 System fan GD4305 GD4305 GD4305 8 Burner control unit EBM966 GY5901 GY5901 GY5901 9 Gas pressure switch GD3930 GD3930 GD3930 10 Temperature sensor heat exchanger GY3933 GY3933 GY3933 11 I...

Page 23: ...16 426 EU GAR relating to appliances burning gaseous fuels 2014 35 EU LVD relating to the electric safety of appliances 2014 30 EU EMC relating to electromagnetic compatibility of appliances 2006 42 EG MD relating to the safety of machinery Goods should be installed and used in accordance with our instructions and with the applicable local and international rules Installation should be done by an ...

Page 24: ......

Reviews: