Permanent shutdown
Alarm fan hall effect speed sensor
Request the assistance of a Gas Safe Engineer or other qualified
personnel.
Display
High temperatures
Request the assistance of a Gas Safe Engineer or other qualified
personnel.
Permanent shutdown
Software fault alarm, PCB start-up
Request the assistance of a Gas Safe Engineer or other qualified
personnel.
WINTERISATION
Winterisation of Holiday Homes That Have a Water Heater
Fresh water freezes at 0°C and expands by 9% with a significant force that will destroy:
•
Pipe work
•
Water heater components
•
Taps, and shower valves
DRAIN DOWN
If you leave fresh water in your caravan system over the winter you will run the risk of damage. This can only be avoided by removing the
fresh water from the system – we call this a “drain down”. You may wish to drain down the fresh water system yourself using the
procedure in the next section but we STRONGLY RECOMMEND that you have this carried out by an experienced engineer as many
caravan systems can only be completely drained by blowing the water out and this requires specialist equipment. View the £50-£60
charge for a drain down as a mini insurance policy and always ask the engineer if he has equipment to blow the water out. The two most
common parts to be damaged by frost are the shower valve and the water control assembly in a water heater and the costs to replace
these are around £100 each.
Drain Down Procedure – without specialist equipment
•
Turn off the fresh water supply stop cock outside the Holiday Home
•
Disconnect the fresh water feed outside the home if possible as this protects from flooding due to stop cock failure
•
Open all hot and cold taps and shower valves and place the shower head in the tray
•
Use the Holiday Home Owner’s Handbook to locate all the fresh water drain cocks under the van – some of these may not be
obvious
•
Open these drain cocks
This procedure does not guarantee that all the fresh water will leave the system. Most modern homes have double check valves in the
TMV2 shower mixers and these trap fresh water and stop the flow of water around the system once the drain cocks and taps are open. It
may appear that all the water has left the system, but beware! This pitfall can be avoided by removing the shower mixer valve/valves
from the system after the cold water supply has been switched off and the drain cocks opened. Many manufacturers provide access
panels and these may make the removal of shower mixers easier. Removal of some shower mixers requires the use of special tools.
In addition, pipe work layouts can cause air locks leaving water inside vulnerable components such as the water heater or shower mixer.
Re-commissioning the home is a reverse of the above procedure.
This drain down procedure may work but the only way to be sure is to blow the water out using compressed air at 3 bar maximum
pressure.
