Hoval AgroLyt 20, Operating Instructions Manual, Page: 27 / 34

Solution
See page 23, Fig. 7b or 7c. Press the Plus key for 5 seconds after
cleaning to clear the display.
See page 16, point 19. Unscrew the cap and press in the button.
Press the Plus key (5 seconds) to cancel the error message.
Contact Hoval engineer. In the meantime the boiler can still be oper-
ated; an emergency mode program is executed automatically.
Contact Hoval engineer. In the meantime the boiler can still be oper-
ated; an emergency mode program is executed automatically.
Contact Hoval engineer. In the meantime the boiler can still be oper-
ated; an emergency mode program is executed automatically.
Contact Hoval engineer. In the meantime the boiler can still be oper-
ated; an emergency mode program is executed automatically.
Contact Hoval engineer. In the meantime the boiler can still be oper-
ated; an emergency mode program is executed automatically.
Contact Hoval engineer. In the meantime the boiler can still be oper-
ated; an emergency mode program is executed automatically.
Contact Hoval engineer. In the meantime the boiler can still be oper-
ated; an emergency mode program is executed automatically.
Contact Hoval engineer. In the meantime the boiler can still be oper-
ated; an emergency mode program is executed automatically.
Contact Hoval engineer. This fault has no influence on the boiler
operation.
Contact Hoval engineer. This fault has no influence on the boiler
operation.
Contact Hoval engineer In the meantime the boiler can still be oper-
ated; an emergency mode program is executed automatically.
Important: the actuator of the top damper must be unlocked with the
black key; then manually open the damper to approx. 30-40%.
Contact Hoval engineer In the meantime the boiler can still be oper-
ated; an emergency mode program is executed automatically.
Important:
the actuator of the bottom damper must be unlocked
with the black key; then manually open the damper to approx.
70-80%.
Fault
F 01
F 02
F 03
F 04
F 05
F 06
F 07
F 08
F 09
F 10
F 11
F 13
F 14
Check/Cause
Clean heating surface!
STL (Safety Temperature Limiter)
activated
Flue gas temperature sensor - open
circuit
Flue gas temperature sensor -incorrect
polarity
Boiler temperature sensor - open circuit
Boiler temperature sensor - short circuit
Return temperature sensor - open cir-
cuit
Return temperature sensor - short cir-
cuit
Storage tank top temperature sensor
- open circuit
Storage tank top temperature sensor
- short circuit
Storage tank bottom temperature sensor
- open circuit
Storage tank bottom temperature sensor
- short circuit
Primary air damper defective
Secondary air damper defective
Error message checklist for TopTronic
®
lambda controller
27
4 205 193 / 00