Low reading on intensity meter
JOWA REP-1L, ultraviolet drinking water steriliser
Possible cause
Lamp faulty, dirty chamber, photocell or circuit board faulty
What to do
Manufacturer's manual, p. 16Clean chamber, test photocell with a torch, replace parts
Other JOWA REP-1L faults
Low reading on lamp meterLamp burnt out, bad connections, ballast fault, wrong supply voltageBoth meters read zeroLamp faulty or automatic fuse offSolenoid valve does not openLamp fault, intensity alarm, alarm relay faulty
From the manufacturer's manual “EM-26 RE-UV-PURIFIERS”. Check against the original on board before work.