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Idiomas disponibles
OUTDOOR RESET MODULE
Table 4. Programming Parameters.
HL_
High Limit.
Hdf
High Limit Differential.
LL**_
Low Limit.
Ldf**
Low Limit Differential.
ELL***
ZR input configured as External Low Limit (ON/
OFF)
duu
ZR input configured as external Domestic Hot
Water (DHW) request (ON/OFF)
ASC
Anti Short Cycle Timeout (seconds); "OFF" is
disabled.
otL*
Outdoor Temperature Low (minimum)
parameter for the outdoor reset curve (°F or °C)*
otH*
Outdoor Temperature High (maximum)
parameter for outdoor reset curve (°F or °C)*
btL*
Boiler Temperature Low (minimum) parameter
for outdoor reset curve*
bP*
Boost Period (minutes). "OFF" is displayed if
Boost is inactive*
Boost step (°F or °C) shown only if Boost is
bS*
active (bP=ON)*
UUS*
Warm Weather Shutdown Temperature (°F or
°C)*
Temperature units (°F or °C)
F-C
* Settings available for adjustment on the 3-digit Aqu-
astat display only when the "Outdoor Reset Module" is
installed.
**Not displayed when connected to an L7248 Aquastat
Control.
***Only displayed when connected to an L7248L Aqu-
astat Control.
OUTDOOR RESET MODULE
ALARMS AND
TROUBLESHOOTING
The 50022037-002 Outdoor Reset Module's enhanced
diagnostics provides contractors with information alerting
them if boiler efficiency is deteriorating or the system is
not running optimally. The information can be read on the
Aquastat's 3-digit display or hand held tools. See Table 5
for available diagnostics, Error Codes and
Troubleshooting hints.
Automation and Control Solutions
Honeywell International Inc.
1985 Douglas Drive North
Golden Valley, MN 55422
Honeywell Limited-Honeywell Limitée
35 Dynamic Drive
Toronto, Ontario M1V 4Z9
customer.honeywell.com
Error
Code
Err1
Sensor fault; check water sensor.
Err2
EnviraCOM fault; check EnviraCOM
wiring.
Err3
Hardware fault; replace controller.
Err4
B1 fault; check B1 wiring/voltage.
Err5
Low Line; check L1-L2, 110 Vac.
Err6a Warning: Fuse; check EnviraCOM
wiring, replace fuse.
Err7
Warning: EEPROM, HL, LL, Hdf, Ldf;
reset to default values.
b
Repeated B1 fault (voltage present at
Err 8
B1 when output is turned off); check B1
wiring/voltage.
a
Warning; Outdoor Reset System
Err9
failure; communication to Outdoor
Reset Module lost, Outdoor Reset
Module failure, multiple outdoor
temperature sensors detected on the
bus, or outdoor temperature sensor
failure. Check EnviraCOM wiring (1, 2,
3), check sensor wiring.
Err
Warning: Boost Failure; Boost Mode
a
active at least once per cycle for the
10
last 60 consecutive cycles. Check
Outdoor Reset curve settings.
Err
DHW Module Sensor failure.
Warning: DHW System failure;
a
11
communication to DHW Module lost,
DHW Module failure, or temperature
sensor failure. Check EnviraCOM
wiring (1, 2, 3), check sensor wiring.
a
Warnings are generated to enunciate the system is not
operating optimally, but the Aquastat is still operating
and maintaining boiler temperature. In the instance
where an Outdoor Reset Module is used, the warnings
may indicate a reset curve setting error one or more
features is not running optimally, and the Aquastat is
reverting to default settings or has stopped running the
Outdoor Reset algorithms. The warnings are cleared
when the issue(s) is resolved.
b
To clear Err 8 condition, depress and hold all three user
keys simultaneously for 60 seconds. Err 8 condition
clears and display returns to normal. Err 8 condition is
designed to catch welded relays on the Aquastat and
will normally only occur near end of life for the control. If
Err 8 condition has occurred early in the controls life, be
sure to check for voltage feedback to B1 when B1
should be off and check current draw on b terminal to
be sure oil burner is not drawing excessive current. Err
8 condition will keep repeating if B1 fault is not cleared.
® U.S. Registered Trademark
© 2009 Honeywell International Inc.
69-2335EFS—01
M.S. 11-09
Printed in U.S.A.
Table 5. LED Error Codes.
Cause/Action
EnviraCO
M Alarm
18
18
18, 58
64
59
92
N/A
25
50, 53,
149
150
146, 147,
148
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