Installation Sheet

Installation & Servicing Instructions Rinnai E-Series
68
16.2 Blocks
An error, which has been detected, is indicated on the display by a block message.
Blocks can be temporary in nature. The controller will do everything possible to prevent
asystemlockandtemporarilyswitchingo󰀨theboilerasaresultofablock.Please
see below for a summary of blocks.
Blocks withagureonthelast2characters.
Code Description Solution
External safety contact open Rectify error as a result of which by determining contact is open.
Or repair interconnection between 24/25
Outdoor sensor contact open (not
connected)
Rectify error as a result of which by determining contact is open or
outdoor sensor is not connected.
Connect outdoor sensor or repair wiring (position 18/19) or replace
outdoor sensor.
Incorrect parameter setting for the
minimum or maximum power
Call Rinnai
Atemperaturedi󰀨erencehasbeen
detected between the supply and
return sensor whilst the burner is
not in operation. After the average
T has disappeared, the block will
disappear.
Check the supply and return sensor for the resistance value and replace
the defective sensor
Check the installation for any external heat source and rectify this
uesensortemperaturetoohigh Check vent system
uesensororthermostatcontact
open
Call Rinnai
uesensororthermostatcontact
closed
Call Rinnai
uegasthermostatcontactopen Check vent system
or check parameter 84 for default
nowaterowcanbedetected
through the controller. De-aeration
cycleisstarted.Whenwaterow
is detected during this cycle, the
de-aeration cycle is terminated
and the burner is released.
The controller checks the water
pressure during static and
dynamic situation.
- check the installation for the presence of air;If there is a secondary
pump installed and it is not hydraulicly separated, it could cause
pressuredi󰀨erences.
- check the use of balancing valves
check if the pump is functioning and/or that the water pressure sensor is
working properly;
Polluted pump;
Polluted water pressure sensor;
Pollutedwaterlter;
Wiring of pump.
The frequence of the power supply
deviates more than + or -1.5Hz
check the main power supply