RVR Energy Technology MICROMAT EC 45, Instruction For Usage, Installation & Commissioning, Page: 55 / 56

55
E n e r g y T e c h n o l o g y
Ltd.
21.2 (possible) causes of fault
&corrective action
CAUSE No. REASON/ACTION
11 Fan is defective / Replace fan
12 There is no gas supply available / Investigate, restore gas supply
13 Low gas pressure / Investigate and rectify
14 Fuse defective / Check fuses and replace as necessary
15 Gas valve min output setting is incorrect / Check and adjust min output C0
2
%
17 Poor ignition lead connection to electrode or damp connection or lead damaged and
shorting to earth / Check and rectify
18 Transformer defective / Replace transformer
19 Condense siphon is blocked or condensate blocked or frozen / Clear siphon or waste pipe
20 Flue gas leakage from connection at rear of heat exchanger / Check, reposition or replace seal
21 System strainer blocked, isolation valve closed. Or some other interruption to waterflow /
Check and rectify
22 Unacceptably high resistance in flue or air supply tubes or flue blocked / Check flue for
suitability or clear obstruction
23 Leakage of flue gas from flue gas tube into air tube vitiating the combustion air / Strip
out flue system and remake joints
24 Zone pumps not running / Check and rectify
25 Heat exchangers fouled internally with silt or scale / Clean, descale heat exchangers
and system and re-dose system with water treatment
26 Heat exchanger high limit stat defective / Replace limit stat
27 Boiler set for wrong gas type / Convert boiler to burn the gas being supplied
28 Flue gas limit stat defective / Replace limit stat
29 Boiler control panel defective / Replace control panel
30 Incorrect position of ignition electrode / Reset gap 4-5mm
31 moisture in-on electrical connections or components / Dry carefully using warm air
from a hair dryer
32 Incorrect electrical connection / Check and rectify
33 Wiring interrupted (broken wire) / Check and rectify
34 reset button stuck / Press button in attempt to free sticking contacts. If no success
then replace control panel
35 Ignition electrode damaged or broken / Replace electrode