E7 is a DRY heater fault.
Check the following first:
1) Water level - Have you filled the spa with enough water?
2) Filters - Are the filters blocked, when did you last clean/replace the filter?
3) Is the circulation pump running? If you can hear the pump, can you see/feel the water circulating? If you can't feel the water circulating but you can hear the pump, then you may have an air lock within the pump/heater.
Canadian Spa Co. do offer their own repair service for these spas. Basically they collect the faulty pump unit, repair it and then send it back. Although it isn't cheap and you should check the basics first.
Good luck,
Http://www.hottubplus.co.uk
SOURCE: sharp ar-m205 error code E7 11
U HAVE TO UPGRADE THE FIRM WARE BY ENTERING SIMULATION 49-1 THE VALUE IS d THEN UPDATE THE FIRM WARE IF U HAVE IT
SOURCE: Sharp MX-2700N - Error Code - 'Call for Service E7 - 05'
E7 is only part of the code. It could be a hard drive problem, memory problem, laser problem, or a loose connection on one of the boards.
SOURCE: cannon pixma mp145 printer error code e7 & e2
E2: Reload the paper correctly and press [Black] or [Color].
E7: The cartridges are not installed in place.
These are from the manual.
SOURCE: hi have problem with canadian spa
OHS, OH, or SPA TEMP LMT Message
There is an "Over Heated Spa" (OHS or OH) Water Condition.
One
of the Water Temp Sensors has detected 110°F (43.3°C) Incoming Water
Temp and Spa Functions are Disabled. System will Auto Reset when Water
Temp is below 108°F (42.2°C). Check for Extended Pump Operation or High
Ambient Temp, or contact your Dealer or Service Organization.
Spa Water Cool Down
•
In order for the Spa Water Overheat Error Message to Automatically
Reset and Clear, the Spa Water Must Cool to below 108°F (42.2°C).
•
Check the Topside Panel Display to see if the "OHS", "OH", or "SPA TEMP
LMT" Spa Water Overheat Error Message has Cleared. If the Error Message
has Not Cleared, the Spa Water is still too Hot to Continue Testing.
• Either Wait for the Spa Water to Cool Below 108°F (42.2°C), or Exit Now and Retest at a Later time.
You can find answers to COMMON SPA MESSAGES at the following website:
COMMON SPA PANEL MESSAGES
Hope this helps.
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