Borg & Overström B5 Install & Operation Manual page 17

Problem/Report Possible Cause
If following normal usage: Follow the same
guidance as for 'Ambient' valve.
Hot Tank Level Probes
disconnected.
Hot Tank Level Probes have limescale build-
up/damage.
Hot Tank Level Control Failed.
Hot Tank has excessive limescale build-up.
Hot Safety dispense function not working.
Hot Tank Solenoid (fill solenoid) failed.
Hot Water Dispense Pump failed.
Hot Water dispense pipe blocked.
Fault Diagnosis: Water Dispenses but not Correct Temperature
Problem/Report Possible Cause
Ambient Water
Low usage and/or fed from water
too Warm supply pipe in warm ducting.
Cold Water not
Cooling switched off.
Cold
Compressor runs and switching off
(cool/warm to touch) - Thermostat
set too high.
Thermostat not working.
Compressor runs but not switching off.
Refrigeration problem.
Suggested Action
Carry out checks.
Check and rectify, as necessary.
Check and clean/replace, as
necessary.
Replace Hot Tank Level Control
Board.
Check & Replace Hot Tank as
necessary.
Check & replace Main Control
Board as necessary.
Check & Replace as necessary.
Check & Replace as necessary.
Check & Replace as necessary.
Suggested Action
Advise user replacing external
causes and solutions.
Check switch positions.
Decrease Cold Thermostat set
point.
Check and replace as
necessary.
Please contact technical
support.
Please contact technical
support.