Rinnai Smart Cylinders ME13548830S Owner And Installer Manual page 9

Problem
Lack of hot water
or no hot water
Lack of hot water
or no hot water
Water is too hot
High electricity
bills
Resetting the Smart Control (only do as a last resort)
Press and hold the + and - buttons at the same time for five seconds or more. Only do this as a
last resort. If you reset during normal operation it will lose all the water usage history as well as
the memory setting and will default back to the preset factory setting of iQ automatic mode,
level setting three.
Recommended action
Are you using more hot water than you think?
Often you don't realise how much water is actually being used. This
applies especially when showering. Typical flow rates for showers is
approximately 8-10 litres per minute. Conduct a simple experiment
by placing a measured bucket under your shower for ten seconds
and multiply by six to determine the amount of water produced
over a minute. If your result is significantly more than the rates
mentioned you may want to consider installing a low flow shower
rose―available at all good plumbing stores.
Cold water relief valve discharging continuously?
It is normal for the cold water relief valve to discharge a small
quantity of water through the drain line. If water is discharging
continuously there may be a fault with one of the valves, contact the
installer to discuss.
If possible check the temperature of the water coming out of a hot
water tap with a thermometer. If it is higher than 55 °C then this
indicates a problem with your system—contact an electrician for
advice.
If you think your electricity bill is too high, investigate the following:
• Is your controller set correctly
• Has your electricity tariff changed?
• Is your cold water relief valve discharging continuously?
• Are you using more hot water than normal?
• Has there been any leaking hot water pipes, or taps?
Rinnai Smart Cylinders MP indoor enamel: Owner & installer guide: 20431-D 04-17 | 9