Technical data
Table Of Contents
- User Instructions for the Micromat boiler
- Product Description
- Technical Data
- Delivery Consignment / Unpacking the boiler
- Boiler location
- Installation Clearances
- Wall Mounting
- Gas Connection
- Gas Conversion
- System Flow & Return connections
- Condensate Connection
- Flue / Combustion Air connection
- Flue Systems
- Calculating Flue Resistance
- Ventilation requirements single appliances
- Hydraulic System Design
- System type 1
- System type 2
- System type 3
- System type 4
- System type 5
- System type 6
- System type 7
- System type 8
- Water Treatment
- Soldering Flux
- Electrical Connection
- System Type 1
- System Type 2
- System Type 3
- System Type 4
- System Type 5
- System Type 6
- System Type 7
- System Type 8
- Commissioning The Micromat EC
- Installation Codes
- First Firing
- Pop Up Menu
- Setting DHW Temperature
- Servicing
- Screen Display Diagnosis of Faults
Energy Technology
Ltd.
57
STATUS MESSAGES (FLASHING DISPLAY) INDICATING A FAULT
A flashing display indicates a fault and that the boiler has shutdown (lockout). The boiler will not attempt
to operate until the red’ reset button is pressed.
Any repetitive flashing fault message should be investigated, the cause found and corrective action taken.
For each flashing display message there is a possible cause, see list of cause numbers following the flashing
status’ list.
Display Message Meaning cause number/s
FLASHING
Wat 1 Lockout high limit stat has tripped. 5,6,7,8,21,24,25,26,31
Wat 2/Flue Lo ht/exch high limit or flue 2,5,6,7,8,21,24,25,26,31
limit stat has tripped
Fan High burner fan speed is too high 9,11,29,31,33
Fan Low burner fan speed during 9,10,11,14,18,29,31,33
pre-purge is too low
Fan oper Lower burner fan is detected as 3,4,11,29,31
operating when should be idle
Ignit fault Ignition to burner has not 12,13,15,16,17,19,22,
been successful after 4 attempts 23,27,29,30,31,35
Flame 1 out Flame at burner has been lost 13,15,17,19,20,23
on 4 consecutive occasions during
operation
Flame 1 on w/ Flame is detected at the lower burner 17,19,30
when there should be no flame
S3 ht/exch flow temperature 3,5,33
sensor interrupted
S4 Return temperature sensor 3,5,33
Interrupted
S7 Mixed flow temperature sensor 1,3,5,33
Interrupted. Only when MR03
Unit installed
Program end Follows reprogramming of control
panel with laptop PC, not a fault
-just press reset button
21.1 screen display
diagnosis of faults