Warnings - Lochinvar EFW 85 Installation, Commissioning, User And Maintenance Instructions

Warnings

Warning Error
no.
200 Comm. Lost with
module
202 App. Selection Error
203 Comm. Lost with
boiler
204 T Outdoor Wrong
205 T System Wrong
206 T Cascade Wrong
207 Heat-Exchanger
protection active
100
Description
Cascade System: Managing cas-
cade control lost communication
with one of the depending.
Unknown appliance model
selected
Dual Cascade System: Managing
cascade control lost communica-
tion with one of the depending.
T_Outdoor sensor measures
open/shorted
T_System sensor measures
open/shorted
T_Cascade sensor measures
open/shorted
The heat exchanger protection
function is actively blocking the
burn demand
E93.1804.014
Cause Solving
connection between Check wiring between boiler or
cascaded boilers is distance between boilers is to
interrupted or wiring big
is broken or parame- or set parameter 147.
ter 147 on the mas-
ter boiler is wrong
wrongly pro- replace BCU
grammed parame-
ters
connection between Check wiring between boiler or
cascaded boilers is distance between boilers is to
interrupted or wiring big
is broken
malfunctioning out- check connection to BCU or
door sensor or not check resistance NTC sensor or
connected or wrong change CH-mode
CH-mode pro-
grammed
malfunctioning sys- check connection to BCU or
tem sensor or not check resistance NTC sensor
connected
malfunctioning cas- check connection to BCU or
check resistance NTC sensor
cade sensor or not
connected
Or wrong cascade settings
(boiler cascade settings) used,
set para 73 to standalone and
use
MODULE cascade settings for
cascading