Truma AquaGo basic Instrucciones De Funcionamiento E Instalación página 37

APPENDIX A – Error Codes
If the appliance malfunctions, LED 2 (refer to "Overview / Designation of parts" on page 2) will flash to indicate the malfunction.
There are short and long intervals of flashing. The flashing will repeat every 3 seconds.
1. Note the flashing intervals and check the list below.
2. Reset the appliance:
– Switch off the appliance. / – Wait 5 seconds / –Switch the appliance on again.
3. If an error code is still displayed, contact an authorized Truma service center.
Error Flash code Error
code s =short = 0
l = long = 1
1 s,s,s,s,s,s,s,l Flame not detected
2 s,s,s,s,s,s,l,s Error at over temperature
switches (EOS, BOS)
3 s,s,s,s,s,s,l,l Error at exhaust pressure
switch (EPS)
4 s,s,s,s,s,l,s,s Error at water over tem-
perature switch (WOS)
5 s,s,s,s,s,l,s,l Flame detected at incor-
rect time
6 s,s,s,s,s,l,l,s Error in the safety circuit
for gas valve
7 s,s,s,s,s,l,l,l Error of burner MCU
internal RAM
9 s,s,s,s,l,s,s,l Malfunction of water
outlet temperature sensor
WOT
10 s,s,s,s,l,s,l,s Error in the safety circuit
11 s,s,s,s,l,s,l,l Error of MCU watchdog
gas release
12 s,s,s,s,l,l,s,s Internal error
13 s,s,s,s,l,l,s,l Short circuit shut-off valve Short circuit detection in the gas valve (shut-off part) detected a current
16 s,s,s,l,s,s,s,s Malfunction of the MCU
20 s,s,s,l,s,l,s,s Malfunction of water inlet
temperature sensor WIT
21 s,s,s,l,s,l,s,l Malfunction of circulation
line temperature sensor
WCT
22 s,s,s,l,s,l,l,s Malfunction of gas valve,
modulation section
23 s,s,s,l,s,l,l,l Voltage is too high
24 s,s,s,l,l,s,s,s Voltage is too low
25 s,s,s,l,l,s,s,l Flue fan current con-
sumption error
26 s,s,s,l,l,s,l,s Circulation pump current
consumption error
27 s,s,s,l,l,s,l,l Water circulation pump is
running dry.
28 s,s,s,l,l,l,s,s Too low gas pressure.
29 s,s,s,l,l,l,s,l Too high heat power
required.
30 s,s,s,l,l,l,l,s Risk of freezing.
31 s,s,s,l,l,l,l,l Decalcification finished.
32 s,s,l,s,s,s,s Current too low.
33 s,s,l,s,s,s,s,l Current too high.
Description
There is a flame-detection error at the burner because the flame was not de-
tected after release of gas and ignition.
Important: The system indicates this error only after three attempts at intervals
of approximately 30 seconds.
The exhaust over temperature switch (EOS) or burner over temperature switch
(BOS) is open/unplugged.
The EPS did not close when the flue fan was actuated because the fan did not
push enough air through the exhaust channel. A cause could be, e.g., blocking
of the exhaust channel or a faulty switch.
OR
The EPS is closed even though the flue fan is not running. Cause is a defective
EPS or flue fan.
The WOS opened at a water temperature of over 185 °F (85 °C).
There is an error in flame detection of the burner because the flame was detected
– before ignition or
– before the release of gas or
– after the gas was switched off.
There is a heating request but gas cannot be released.
One of the switches WOS, EOS, BOS, EPS is open/unplugged.
Error detected in the burner MCU's internal safety monitoring feature (safety
variables are no longer correct or RAM/STACK was overwritten by mistake).
Water outlet temperature sensor WOT
– has a short circuit or
– is open/unplugged.
There is a heating request but gas is not released because a valve-actuation
signal was not activated.
There is a heating request but the MCU watchdog does not release the gas
path.
> 1000 mA and shut off.
Internal error of the control unit.
Water inlet temperature sensor WIT
– has a short circuit or
– is open/unplugged or
– the temperature of the sensor is colder than 14 °F (-10 °C).
Circulation line temperature sensor WCT
– has a short circuit or
– is open/unplugged or
– the temperature of the sensor is colder than 14 °F (-10 °C).
Error at gas valve, modulation level, because
- the modulator has a short circuit or
- is open/unplugged.
The main power supply's voltage detector measured a voltage level of >16.4 V.
The main power supply's voltage detector measured a voltage level of <10 V.
The current detector for the flue fan has measured a current outside the permit-
ted limits.
The current detector at the circulation pump has measured a current outside the
permitted limits.
The circulation pump does not generate water flow. The water system may not
be filled or not sufficiently vented.
The circulation pump tries (20 times) to generate a water flow every 30 s (if
successful, the error is reset).
Gas supply (in vehicle) to the appliance insufficient.
You are trying to use more hot water than the appliance can supply.
Temperature in the appliance below 27 °F (3 °C).
–
Current in the antifreeze kit too low (e.g. cable break).
Current in the antifreeze kit too high (e.g. short circuit).
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