Exhausto EXact2 VEX240 series, Basic Instructions

Page: 99 / 108

MCOCW Control
Device
Fault code
Category
Alarm description
Troubleshooting
(See appendix 1: "Simplified diagrams" for the positioning of dampers,
sensors, air directions, etc.)
xx yy z
49 01 1 Module configured in-
correctly. Check CN6
on circuit board
● Check the jumper in the CN6 connector on the MCOCW mod-
ule. There must be a jumper across 5 and 6.
49 02 1 Fan speed temporarily
reduced Fan speed temporarily reduced because warning limit for frost pro-
tection of water heating coil has been reached.
49 03 1 VEX temporarily stop-
ped Fan speed temporarily reduced because stop temperature for frost
protection of water heating coil has been reached
49 04 1 VEX stopped MCOCW is temporarily controlled by the Lodam Multi Tool.
49 06 1 Heat control currently
run locally due to serv-
ice MCOCW temporarily controlled by Lodam Multi Tool. Override
lasts for max. 60 minutes.
49 07 1 Heat control safety
functions overridden lo-
cally due to service MCOCW temporarily controlled by Lodam Multi Tool. Override
lasts for max. 60 minutes.
49 11 2 Heating has been
blocked due to cold
water in the feed pipe EXact has detected a heating requirement, but via TE-SPT has
registered cold water in the feed pipe. Heating is therefore blocked
for 6 hours.
● Check that there is hot water in the feed pipe if the heating
function is required.
49 12 2 Cooling has been
blocked due to hot wa-
ter in the feed pipe EXact has detected a cooling requirement, but via TE-SPT has
registered hot water in the feed pipe. Cooling is therefore blocked
for 6 hours.
● Check that there is cold water in the feed pipe if the cooling
function is required.
49 13 4 Heat control detected
which was not selected
in VEX/CX configura-
tion The heating coil is configured as MCOCW in menu 3.4 "Accesso-
ries".
49 14 4 Heat control configured
incorrectly in connec-
tion with selected
VEX/CX configuration ● Check the jumper in the CN6 connector on the MCOCW mod-
ule. There must be a jumper across 5 and 6.
49 15 4 No modbus communi-
cation to water heat
control ● Check the modbus cable between the connection board (EX-
act)/main board (EXact2) and the MCOCW module.
● Check the modbus cable from the MCOCW module to the oth-
er units for faulty wiring.
3005167-2022-02-02
Alarms
99/108